We don't know what it is about VINCE VAUGHN, but no matter what he's talking about -- it's hilarious! You'll see for yourself when he's on the show today! Vince was in the hilarious movie "Couples Retreat," and speaking of couples, he's gonna tell Ellen about his engagement! They'll also play his favorite game: Humdinger -- he's good at guessing, but can he hum too? And you know SCARLETT JOHANSSON is a great actress, but did you know she is also an amazing singer? She's teamed with PETE YORN for her second album called "Break Up," and the two will perform their song "Relator." It will be their first time performing on TV -- and it's right here on the show! Ellen also found another batch of Hidden Audience Talents and they might be the greatest so far (and you thought the guy who could kick himself in the forehead 25 times was the best!).

Today is the day! He's finally here, the hottest man on the planet right now -- ROBERT PATTINSON! The gorgeous guy has been stealing the hearts of women across the world since he played the vampire Edward in "Twilight." He is literally being mobbed everywhere he goes. Today he's coming here and Ellen can't wait! Also, last year Ellen met a 13-year-old fiddler named JUSTUS RIVERA after Ashton Kutcher tweeted about him. He's self-taught and plays on the streets of Philadelphia to help support his family. You have to see him to believe it.

Today Ellen is surprising one lucky viewer with a massive surprise: a trip to L.A. to see the show, and a brand new GMC Terrain! Then, you won't want to take your eyes off the screen when the sexy JON HAMM is here. You can buy Jon for yourself; this summer, Barbie released a doll based on his character from "Mad Men!" Also, Ellen did it again: she predicted the latest Bachelorette! ALI FEDOTOWSKY is stopping by to share some of the details. And the amazing NATASHA BEDINGFIELD is here. She's releasing her new album soon, but today she's giving everyone a preview when she sings one her songs, "Touch."

Ellen has a brand new GMC Terrain she wants to give away, and she knows the best way: Game Week! Today is first day of Ellen's All Terrain Game Week -- with some of the biggest prizes ever -- and it all ends with someone driving home a GMC Terrain! If today's game involves archery, RUSSELL CROWE can help! He surprised everyone by showing up with a bow and arrow a couple of weeks ago, helping an audience member make a perfect shot! It's all the training from his movie, "Robin Hood." That's not the only thing he's good at; he told Ellen he's a great shopper. Then, the hilarious ERIC STONESTREET is a talented guy. He recently showed off his amazing drumming on an episode of his hit show, "Modern Family." He's also boasted quite a bit about his mouth trumpet skills -- Ellen will see if he's really got it! And since today's guests are all incredibly talented, it's a perfect day for Ellen to feature another talented web star in Ellen's Wonderful Web of Wonderment.

Ellen loves SANDRA BULLOCK! She's fun, she's funny, she's brilliant and she's beautiful. Oh, and she let Ellen hit her over the head with a bottle once, too. Her career has taken off this past year; "The Proposal" was the biggest movie of her career, and then she won an Oscar for her incredibly inspiring film "The Blind Side." Also, Ellen is planning a huge surprise for a very deserving audience member, so don't miss the show.

Ellen has been doing the show for seven years, and in all that time, the outrageous EDDIE MURPHY has never stopped by. Today he's finally here, and he has some explaining to do! He's been a busy man; Eddie is the second highest-grossing film actor in history, thanks to his hilarious roles, like Donkey in the new "Shrek Ever After." No one knows what to expect from him today, but we do know that you don't want to miss it! Then, CASEY JAMES made it far on "American Idol", but was eventually voted off. Today he's stopping by to share the excitement of making it to the top three -- and will give one last amazing performance! Also, from "Sex and the City 2," JASON LEWIS is here to share all the details. He's also bringing an exciting gift for a lucky audience member.

Just like Ellen, MARTIN LAWRENCE started as a stand-up comedian. Now he's starring in huge movies like "Death at a Funeral." The hilarious guy is stopping by to tell Ellen all about it. He's not just a funny man, he's a family man with three beautiful daughters. And he's also got a great heart -- he bought a car for the teacher who encouraged him to be a comedian! Then, DIDI BENAMI was voted off "American Idol," but she's not done yet. She's stopping by to chat with Ellen about her elimination and give one great performance! Also, Ellen has another batch of hilarious web videos that you won't want to miss!

Ellen is on her way to hitting 5 million Twitter followers, but there's one guy who might beat her to it: ASHTON KUTCHER. He and Demi Moore have been tweeting non-stop since they started their accounts, and today Ellen will find out what inspires his random thoughts. She'll also get to hear about his newest movie; "The Killers" with Katherine Heigl. Then, country singer CHELY WRIGHT recently broke ground when she became the first country artist to publicly announce that she's gay. She's stopping by to tell Ellen how the journey is going. And not long ago, DJ Tony took a few days off to play a part in "The Bold and the Beautiful," and today he's got a sneak peek. Also, one of Ellen's favorite shows, "So You Think You Can Dance," is bringing back their all-time top dancers this season, but not before they dance with Ellen!

Today is Mama's 80th birthday and Ellen is celebrating in style! Betty DeGeneres has stood by her daughter since day one, and today Ellen will thank her with a special tribute -- plus a phone call from one of Betty's favorite television stars! And there might just be some surprises in Mama's honor -- for the audience and even viewers at home! Since it's such an important day, Ellen wanted the sexiest and funniest guest, and had only one guy in mind: ANTONIO BANDERAS. He's reprising his hysterical role in "Shrek Ever After," and once told Ellen the ladies love Puss in Boots more than him. Fortunately, Melanie Griffith knows which is more important; they just celebrated their 14th wedding anniversary! Then, it couldn't be a great birthday party without the best band, so WEEZER is performing! They've been popular for almost two decades with some of the best songs of the '90s, and today they're singing the hit song "I'm Your Daddy" from their latest album, "Raditude."

It's Day 4 of Ellen's All Terrain Game Week and the competition is getting intense! There's just one more day until someone drives home a brand new GMC Terrain, and today's contestants will do anything to make it to the end! Someone at home is winning one too, so if you haven't entered to win, don't miss out on your big chance! That's not the only exciting gift Ellen is giving away! All month long she's got huge surprises in store for her audience during Yay! May! Today, one lucky audience member will win something that will change their life! Ellen always has a great time when the very sexy ROB LOWE visits. He's always up for some fun with Ellen, whether skiing down a mountain, sledding down a giant inflatable slide, or simply getting his hair washed! Now the hilarious guy has a brand new role on "Parks & Recreation" -- his first role on a comedy show.  It's a good thing Ellen trained him not to laugh! Then, COMMON is one talented guy; he's an amazing Grammy-winning rapper and now he's proving that he's a skilled actor too! He's starring with Queen Latifah in the new movie, "Just Wright," and will be stopping by today!

No one can get enough of Ellen's "What's Wrong with These Photos? Photos!" Whether it's a poorly written sign or an object that resembles something else, these hilarious photos just aren't right! Then, it's been six years since Oscar-winning actress GWYNETH PALTROW was here, and today she's finally making her big return! Ellen wants to know everything that's happened since, and will be sure to get the latest on her cute kids. Ellen recently found out that she was distantly related to Madonna, one of Gwyneth's London neighbors -- now Ellen wants to know how she's related to Gwyneth! Plus, Ellen welcomes another guest who will have everyone going wild!

She's funny, she's beautiful, and she's absolutely unpredictable! Even better, HEIDI KLUM loves Ellen! Today she's on the show for the 10th time, and the two are ready to celebrate! Heidi has thrown food at the audience, run obstacle courses... and even took off her dress in the middle of an interview! No one knows what she'll do today! She recently started a maternity fashion line and will tell Ellen all about it. Then, "Glee" is one of the biggest shows of the season and turned CHRIS COLFER into an overnight star. He sang at the World Series and even met the President! Chris is stopping by to tell Ellen all about it -- and might even have some details on what to expect later this season. Also, Ellen has been saving up some of the best photos that are just plain wrong. It'll be one of the funniest "What's Wrong with These Photos? Photos" ever. And if that weren't enough, Ellen has a huge surprise for one of her audience members that will leave them speechless -- or screaming non-stop! And if you want to win big, now's your chance. Starting today, you'll have the chance to win huge, one-of-a-kind prizes all month long. You even have a chance to win a trip to L.A. to see the "American Idol" finale -- and drive off with a brand new GMC Terrain!

Today is Earth Day, and Ellen is doing her part to make our home a better place to live -- by giving you a great show! The hilarious WANDA SYKES is here for the 10th time, and Ellen is ready to celebrate the occasion. Wanda's twin babies just turned one year old, and we're sure she has her hands full! Then, EVAN LYSACEK has brought his gold-medal-winning skating moves to the dance floor -- and makes it look easy. He has a great partner in ANNA TREBUNSKAYA, and they're stopping by to chat with Ellen and perform a dance. Also, another contestant was voted off "American Idol" this week, but that doesn't mean it's the end of the road for them. They only need to look at former contestant JASON CASTRO, who is about to release his debut album. He'll stop by to perform his hit song, "That's What I'm Here For." And you'll want to pay attention to Ellen's tweets. You may find yourself talking with Ellen live -- and winning huge prizes! 

Just like Ellen, MARTIN LAWRENCE started as a stand-up comedian. Now he's starring in huge movies like the upcoming "Death at a Funeral." The hilarious guy is stopping by to tell Ellen all about it. He's not just a funny man, he's a family man with three beautiful daughters. And he's also got a great heart -- he bought a car for the teacher who encouraged him to be a comedian! CORY MONTEITH didn't have quite the same career path -- he's been a Wal-Mart greeter, a cab driver and a roofer! Now he's playing Finn on the smash hit "Glee." It's one of the biggest shows of the year and he'll tell Ellen all about it. And Ellen has another batch of hilarious web videos that you won't want to miss!

Just like Ellen, JACKIE CHAN does all his own stunts! He shows what he's got in the movie, "Spy Next Door," and will be dropping by to chat with Ellen today. Ellen will make sure to hide the expensive china -- one time he broke her vases! She broke something too... a bottle over his head! Then, you know ANNA KENDRICK from the "Twilight" movies, and she recently co-starred with none other than George Clooney in the Oscar-nominated film, "Up in the Air." When she visits Ellen today, the two will swap their favorite Clooney stories! And Ellen has some of the best web videos ever that will keep you laughing all day long!

The producers of "Dancing with the Stars" have to be prepared for anything -- PAMELA ANDERSON is competing this season! Ellen can never predict what she'll do here; one time she flipped over the couch and another time she stripped down to a bikini! We'll find out what she'll do today when she visits with her dance partner, DAMIAN WHITEWOOD. Then, Ellen will welcome CHEF JOSÉ ANDRÉS to teach everyone a brand new recipe. His restaurant in L.A. was awarded a rare four stars by the L.A. Times -- so the food is bound to be amazing! Also here for the first time is the very cute jazz musician JAMIE CULLUM. He'll be putting an unbelievable new twist on a popular hit when he sings "Don't Stop the Music" -- you don't want to miss it! And Ellen will feature another group of audience members with amazing hidden talents you have to see to believe!

Jake from "The Bachelor" has given the final rose, and today the couple is here to share all the behind-the-scenes details with Ellen! It's been one of the most scandal-filled and surprising seasons ever, and they have a lot of questions to answer! Ellen will find out all the drama, and she's making sure they answer the tough questions! While here, Jake might want to get some tips from the very sexy SIMON BAKER. He's been married for over 11 years! It must be the romance -- he said he loves an open fire with a sunset. Who wouldn't love a man like that? Being labeled the sexiest man on TV doesn't hurt either! Plus, last summer over 2 million people downloaded the #1 hit song, "Whatcha Say." It was JASON DERULO's first single, which made it clear that he was headed to the top! Now he's releasing his debut CD and is stopping by to perform his latest hit, "In My Head." And, Ellen has another group of audience members who will show off their unbelievable hidden talents today. Don't miss it!

Everyone is talking about "  American Idol," especially Ellen! She has exclusive footage from this week that you don't want to miss! Then, would you confront one of your big fears for charity? FELICITY HUFFMAN did. She walked the runway in a fashion show promoting women's health, and was scared the entire time! She'll be much more comfortable sitting down with Ellen to tell her all about this season of "Desperate Housewives," which is as outrageous as ever. Last time here, she brought her Bad Paid-For Photo, but she won't have to embarrass herself -- today Ellen has another group of brave people who are revealing their embarrassing pictures!

Ellen's Winter Win Storm is getting stronger, and it's been Terrain-ing Men all during  Game Week. Today the competition gets tighter as the prizes get bigger -- someone could win a trip to Bora Bora! It all ends tomorrow when someone wins a brand new GMC Terrain! And every time there's a winner on the show, a home viewer wins too -- and it could be you! You're already a winner today when KATE WALSH stops by to tell Ellen about the new season of "Private Practice." Kate said she's always up for a dare -- will Ellen think of something for her? Also, the competition is getting fierce on "The Bachelor"... it's almost time for Jake to choose! He didn't pick today's guest... the latest castoff is here to spill all the behind-the-scenes drama.

With Valentine's Day just around the corner, Ellen has been preparing all week long. She's invited the sexy guests -- now it's time to bring the dreamy ones. The McDreamy, that is. PATRICK DEMPSEY is bringing a little romance to the show. He once said he doesn't believe in Valentine's Day, but after being in a movie called "Valentine's Day," has he changed his mind? Either way, he's still just as dreamy on "Grey's Anatomy." Then, you won't have to spend hours making yourself beautiful if you pay attention to KYM DOUGLAS! She always brings her homemade beauty secrets to the show, and Ellen never knows what she'll suggest! Whether it's bathing in wine, sticking her feet in Jell-O, or rubbing coffee grounds on her butt, Kym isn't afraid to show off her amazing and hilarious tips. 

You never know what's going to happen when HEIDI KLUM stops by! The gorgeous supermodel and "Project Runway" host is always doing something outrageous -- whether it's competing in a  motherhood obstacle course or  taking off her dress in the middle of the show! She recently gave birth to a baby girl and will tell us all about her. And if she weren't busy enough, she has also partnered with The Heart Truth to help raise awareness of women's health. Then, Olympic snowboarder SHAUN WHITE is also well-known for being outrageous. His unbelievable tricks won him the Gold Medal at the last Olympics and he's been working on even more -- will he be able to get the gold again? Also, if there were a gold medal for juggling, ANTHONY GATTO would have one! He's considered the world's best juggler and today he'll be showing off his unbelievable talents -- have you ever seen anyone juggle with their head before? You will today! And Ellen's audience better brush up on their trivia -- today Ellen is playing another round of "Know or Go" -- and we all know what happens when they don't know!

Get ready, ladies! MARIO LOPEZ is here today! That's right, the gorgeous guy will be visiting Ellen before he hosts "Miss America" on Saturday. Last time he was here, Ellen finally got him to take off his shirt. Think she can do it again? She just might. Then, last week while the storms were pounding Southern California, a dog got trapped in the raging L.A. River. Firefighters tried for an hour to rescue him before calling in a helicopter for a dramatic rescue, broadcast live on TV. Today, firefighters JOE ST. GEORGE, SCOTT BOWMAN and DAN CHILD will tell Ellen everything that happened. Also, CORINNE BAILEY RAE'S first album was nominated for a Grammy, so her second one is bound to be great! Today she'll perform "I'd Do It Again."

It's time to play a round of Ellen's favorite game: Blindfolded Musical Chairs! Laugh as audience members stumble and bump around looking for chairs without being able to see. They'd better keep an eye on their watches though, that's because the World Champion sleight-of-hand magician SHAWN FARQUHAR will be here to show Ellen his amazing tricks. Then, "Grey's Anatomy" star ELLEN POMPEO will be here to tell Ellen all about the show, her marriage and her new baby girl. Also, from "The Big Bang Theory," JIM PARSONS will be here all the way from... the other side of the WB lot. He plays a genius on the show, so we'll see how he stands up to Ellen's IQ test!