We hope "NCIS: Los Angeles" star Chris O'Donnell gets into an Irish-Off with Conan; events include Biggest Family, Best Corned Beef, & Most Catholic Guilt.
The rapper, producer and crunkster extraordinaire stops by to talk about music and his time on "Celebrity Apprentice."
This ingenue has played a definitive role in establishing the alt rock sound of the 90s and beyond. She's here to sing a song off her 8th album Let England Shake.
You know him from hit shows like "Hell's Kitchen" and "Master Chef"-International cooking sensation, Gordan Ramsay talks shop about his Fox show "Kitchen Nightmares."
She played the indestructible cheerleader Claire Bennet on the hit show "Heroes." Now you can catch her in Wes Craven's "Scream 4."
Ryan Stout is a stand-up comedian who performs all over the world. He'll be making his late-night stand-up debut on "Conan."
Not only is "Parenthood" star Dax Shepard a terrifically funny actor, he's also crossword writers' favorite celebrity since Axl Rose.
This U.S./UK duo is all around badass. They'll sing a song off their fourth album Blood Pressures - in stores now.
"Glee" star Matthew Morrison's big break came playing Lt. Cable in "South Pacific." But who would ever want to wash hunky Matthew out of their hair??
You loved her as Rory Gilmore for seven seasons of "The Gilmore Girls" - Now you can see her in the new Robert Redford film "The Conspirator."
Queens of the Stone Age have released their first album in six years, ...Like Clockwork. Ironically, it's been a long time to wait.