Ellen kicks-off Season 8 with the biggest premiere ever -- direct from the MTV Video Music Awards! The incredible LADY GAGA, nominated for more VMAs than any other artist in history, is headed straight from the VMAs to Ellen's season premiere! That's not it! JUSTIN TIMBERLAKE, KATY PERRY, and JUSTIN BIEBER are all stopping by... plus, you never know who else may drop in!

It's Ellen's first day back in the studio for a brand new season, and there's no one better to help get things started than her friend and star of "Parenthood," the hilarious LAUREN GRAHAM. Ellen had plenty of time to get some GTL (gym, tan and laundry) this summer, so she's all set when the THE CAST OF "JERSEY SHORE" drops by. He's starting Season 8 with a bang, joining Ellen at the VMAs -- USHER is in studio today to perform his hit, "DJ Got Us Fallin' in Love Again." Plus, the hottest dancers from the latest season of "SO YOU THINK YOU CAN DANCE" are showing off their amazing moves.

She just won an Emmy, now JANE LYNCH is visiting Ellen for the very first time to share all the excitement of the new season of "Glee." Last week, Ellen brought some cameras and crashed the U.S. Open in New York, and today she'll show you everything that happened. One of Ellen's favorite "American Idol" alums, DAUGHTRY, will perform their huge hit, "September" from their album, "Leave This Town." NEV SCHULMAN, ARI SCHULMAN and HENRY JOOST are here to tell Ellen about making her favorite new documentary, the suspenseful "Catfish."

Ellen has been looking for great talent, and she discovered another incredibly talented teen musician in 16-year-old TOM ANDREWS. She flew him all the way from England to L.A. just to perform for you! It's been four years since he's stopped by; today the multi-talented BEN AFFLECK returns to Ellen! He directed, co-wrote and stars in the new movie "The Town." But can he juggle while being interviewed by Ellen? You've heard the biggest hit of the summer, "Cooler Than Me," all over the radio. Now MIKE POSNER will perform it for Ellen!

MARY-KATE & ASHLEY OLSEN have their very own fashion line, and today they'll bring the season's hottest styles to Ellen! Last week, Ellen dropped in on New York Fashion Week, and today she's showing what happened when she hit the runway. On Wednesday night, the newest winner of "America's Got Talent" will be crowned. Ellen has the champagne ready to go when she welcomes them to the show!

While hiking in Utah, a man named ZAK ANDEREGG saw an abandoned puppy 350 feet down a hole -- and risked his life to save it! He and his wife MICHELLE are here with the dog, Riley, to share the beautiful story with Ellen. COURTENEY COX knows how to stay young -- or at least keep the men around her young! She's starting a brand new season of "Cougar Town," where she's reuniting with "Friends" co-star Jennifer Aniston! "Hawaii Five-O" is back and better than ever with a brand new reboot. The sexy ALEX O'LOUGHLIN will tell Ellen all about it. OK GO is known for their inventive music videos, and today Ellen has the world premiere of their latest.

He's hilarious and he's finally back to chat with Ellen -- HUGH LAURIE has the scoop on the brand new season of "House"! Ellen is always searching for the most talented kids, and she found one in 6-year-old TANNER EDWARDS. He's an unbelievable hip-hop dancer and is coming here to perform for everyone. He's in one of Ellen's favorite shows, "Modern Family." Today, the Emmy-nominated JESSE TYLER FERGUSON is here to tell her what's in store this season. MICHAEL FRANTI & SPEARHEAD are releasing a brand new album, "The Sound of Sunshine," and will perform the title track for everyone.

It's been six long years since BROOKE SHIELDS was on the show, but today she's finally back and ready to have some fun! Ellen recently hit the runway at the Richie Rich fashion show during New York Fashion Week. She brought along some cameras, and today you'll get to see everything that happened behind the scenes. The multi-talented actress and singer Selena Gomez is here with her band, SELENA GOMEZ & THE SCENE. They'll perform their new song, "Round and Round" from their upcoming album, "A Year without Rain."

The last time he was here, ED HELMS showed off his hidden talent: the ability to spin any object on his fingers! He's back -- and he just might have another talent to show off! KELLY OSBOURNE is always up for something new. She's now the new co-host of "Fashion Police" on E! -- and is chatting with Ellen today. LE REVE at the Wynn in Las Vegas is well-known its jaw-dropping acrobatics. The cast is here today to perform one of their unbelievable routines.

Ellen loved the salsa lessons from JIMMY SMITS last year, so she's invited him back for another round on the dance floor! Ellen loves MAROON 5, and their album, "Hands All Over," is getting a lot of attention. They're here to perform their hit song, "Misery."

Ellen is always on the lookout for the most talented kids. Today she'll introduce you to 7-year-old rapper LIL P-NUT, who will astound the audience with his skills. Last time here, LL COOL J beat Ellen in a round of Guesstures. She's got LL back today and might just challenge him to a rematch, but not before hearing about the new season of "NCIS: Los Angeles." It's been a difficult few months for MAURA TIERNEY, now she's healthy and ready to go with her brand new show, "The Whole Truth," and Ellen can't wait to see her!

He's on one of the hottest shows on TV! Ellen's former WB neighbor, JOHN STAMOS, will return to his old home to share some inside details about "Glee." Yesterday, the newest "Bachelor" was announced, and today he's making an exclusive talk show appearance -- only Ellen will have the inside scoop on the upcoming season! When the new band VAMPIRE WEEKEND released their album, it went straight to #1. Now they're coming straight to the show to perform for Ellen.

The very sexy PATRICK DEMPSEY is back today to share all the details of the new season of "Grey's Anatomy" -- hopefully wearing the thong Ellen gave him last time! The movie "The Social Network" hasn't been released yet, and it's already getting Oscar buzz! One of the stars, RASHIDA JONES, is here to tell Ellen all about it. They won a Grammy for Best New Artist, and the Academy of Country Music Award for Top New Group -- now the ZAC BROWN BAND is here to perform "As She's Walking Away" from their album "You Get What You Give."

While in New York, Ellen dropped in on a production of "Promises, Promises" with her friends Kristin Chenoweth and Sean Hayes. She brought along some cameras, and you'll get to see everything that happened! It seems like every time TAYE DIGGS is here, he gets sexier! He'll stop by today to tell Ellen all about this season of "Private Practice," and she's expecting some photos of his son! Since his debut in 2001, PETE YORN has consistently been an amazing musician. He just released his new, self-titled album and is stopping by to perform.

October is Breast Cancer Awareness Month, and Ellen is dedicated to finding a cure. The show is going pink today, and Ellen will share how she's helping the cause -- and how you can join in! It was an emotional start to "Dancing with the Stars" for JENNIFER GREY. She and her dance partner, DEREK HOUGH, are stopping by to chat with Ellen. Ellen is welcoming back her personal chef, ROBERTO MARTIN, who will teach everyone another delicious and healthy meal. Ellen is always on the lookout for the greatest inventions, and she thinks she found them! Today she has four more KID INVENTORS who will show off their incredible creations.

What could possibly be better than an incredibly talented kid? Three talented kids! Nine-year-olds Gavin Pecson & Kris Mangonon, and 8-year-old Kida Burns are amazing hip-hop dancers who formed the crew THE ART OF TECHNIQUE and they're bringing their moves here. "Grey's Anatomy" is back for another season, and that means ELLEN POMPEO is back with Ellen today! She has the latest on her hit show, and is sure to have some adorable stories from her daughter's first birthday! KENNY CHESNEY is one of the biggest country music stars ever -- and he's not stopping! He just released his new album, "Hemingway's Whiskey" and will drop by to perform and chat with Ellen.

Last week, GREYSON CHANCE gave his biggest performance ever at Canada's We Day. Ellen will connect with him today to hear all about the exciting experience. Whenever JENNY McCARTHY stops by, it's always a fun time! Whether Ellen is dropping her in a dunk tank or scaring her with a giant panda, Jenny is up for anything. She'll have a lot to talk about when she shares her new book with Ellen; "Love, Lust, and Faking It: The Naked Truth About Sex, Lies, and True Romance." You may not know the name ARMIE HAMMER now, but you will! He's in the new movie "Social Network," and is getting a lot of attention -- there's even talk of an Oscar! He's introducing himself to Ellen today. RASCAL FLATTS has been together for 10 years, and they're still going strong. Today they're here to perform one of their greatest hits before they chat with Ellen. Your jaws will drop when Ellen welcomes quick-change artists SOS & VICTORIA.

Last week, ANDERSON COOPER focused on an issue that's very important to Ellen: bullying. Today she's talking with him live from New York about what's happening -- and how you can help put an end to it. Ellen has been searching for the worst of the worst photos that you paid for -- and she found them! Today Ellen's got another hilarious batch of BAD PAID-FOR PHOTOS that you have to see to believe! Whenever FELICITY HUFFMAN stops by, Ellen is ready to challenge her to a game. Today they're trying a brand new one -- you never know what's going to happen! Not only does Ellen love GRACE POTTER & THE NOCTURNALS, Rolling Stone called them the Best New Act of 2010! They're here today to perform one of their hit songs.

Ellen is always making sure HOWIE MANDEL feels comfortable, even it means sealing him in an inflatable ball! The hilarious guy is about to hit the road on tour, and is making Ellen his first stop! For years, KEN JEONG has been a licensed medical doctor. Now he's one of the most talked about comedians, and starring on "Community!" He's here to tell Ellen how it all happened. MIKE TOMPKINS has become an internet sensation with his web videos -- where he not only sings, but creates all the music -- with just his mouth! Ellen welcomes him here today to recreate one of the popular videos!

One of Ellen's all-time favorite shows is "Dexter" -- and today Dexter himself, MICHAEL C. HALL, is finally here for the very first time and Ellen's getting the scoop on the exciting new season. Last year, TONY DANZA took on one of the hardest jobs in America -- he became a high school English teacher! His new show, "Teach: Tony Danza" follows his experience, and he'll tell Ellen what it was like. Ellen saw a video of C.J. HOLLAND & DAKOTA BRADLEY singing, and had to get them here! They'll be performing a beautiful song for her today.

MIKE "THE SITUATION" SORRENTINO has a new ritual: gym, tan, laundry... and dance! He's partnered with KARINA SMIRNOFF on "Dancing with the Stars" and will show Ellen what he's got. Ellen's friend DAVID SPADE just can't stay away! It's his 12th time here, and he's always hilarious. Today will be no exception! Legendary producer Danger Mouse, and the lead singer of The Shins, James Mercer, have teamed to create the critically acclaimed duo, BROKEN BELLS. They'll perform their hit song today for Ellen, "The High Road."

It's been six long years since BRUCE WILLIS has been here, but today he's back! He's still as big an action star as ever and is taking a minute to chat with Ellen about everything that he's been up to. Ellen's WB neighbor and fellow ping-pong enthusiast KALEY CUOCO is back to work after her recent horseback riding injury. Ellen will make sure Kaley is comfortable when she stops by today. JOSHUA RADIN sang for Ellen and Portia at their wedding, and today Ellen is excited to see him again as he premieres a song from his brand new album, "The Rock and The Tide."

She can act, she can sing, and she's helping to fight breast cancer. The always delightful MINNIE DRIVER is back today. Her son, Henry, is 2 years old, and Minnie is sure to have some stories! It was a scary year for BRET MICHAELS, but he's back to health and back to work. Today he's sitting with Ellen and will share what he's learned from the experience. You may wonder why DOMINIC LACASSE is better known as "FLAG MAN," but after he shows off his talents today, it will be clear! PEREZ HILTON is well known for his gossip blog -- and for saying what he thinks. He's been thinking a lot recently... and today he's here with an important announcement.

The very sexy SIMON BAKER will feel right at home when he visits Ellen today -- he filmed some of his hit show, "The Mentalist," on Ellen's set! He's sure to bring a lovely thank-you gift for her. As if the show couldn't get any sexier, CHRISTINA HENDRICKS is stopping by to talk about her breakout role on "Mad Men." Ellen wants to hear what it's like working alongside Jon Hamm! BRUNO MARS has the #1 hit in the country, and he's here to perform it for Ellen. You don't want to miss him sing, "Just the Way You Are."

The gorgeous EVA LONGORIA PARKER is visiting Ellen today. Last time, she won a basketball challenge. Can she best Felicity Huffman's score in Funglish? Every time KEVIN NEALON stops by, no one can stop laughing! The incredibly funny guy is returning today to tell Ellen the latest on his show, "Weeds." If you don't know about FLORENCE + THE MACHINE, you should! They were on this year's MTV Video Music Awards and will be opening for U2 next year, and they're here to perform for Ellen today!