Dr. Oz, Oprah and Dr. Roizen

 
Oprah poses for a picture with Dr. Mehmet Oz and Dr. Michael Roizen after the show Dr. Oz on Aging: How to Turn Back Time, Part 2.
Tyson

 
He's got four legs, a wet nose, furand he can skateboard with the best of them! Tyson the skateboarding bulldog zooms his way onto the stage during YouTube's Greatest Hits with the Billionaire Founders.
Dean and Oprah

 
Even Oprah's getting in on the YouTube action! With the help of Dean, the stage manager, Oprah readies her video camera to film special behind-the-scenes clips to feature on YouTube's Oprah Channel at www.youtube.com/oprah.
Oprah interviews Jonathan Kaplan.

 
After the show, Oprah takes her Flip Video camera by Pure Digital Technologies backstage to interview the company's founder, Jonathan Kaplan.
Oprah

 
Oprah takes the stage before the show Beauty Queen Raped by Her Husband.
Oprah and Kelly

 
Kelly, Oprah's stylist, gives her wardrobe a last-minute adjustment before the show begins.
Lisa Bloch Rodwin and Oprah

 
After the show, Oprah chats backstage with show guest Lisa Bloch Rodwin.
Charla Krupp, Lloyd Boston, Stacy London and Oprah

 
Oprah and style gurus Charla Krupp, Lloyd Boston and Stacy London have some fun onstage after the show How to Look Great at Every Age.
Cenell and Oprah

 
Cenell is all smiles after her frumpy-to-fabulous fashion makeover!
Donny Osmond

 
He's a little bit rock and roll! Donny Osmond rehearses his performance the night before the taping of Over 100 Osmonds Reunite on Our Stage.
Oprah and the Osmond clan

 
Oprah holds Ivy, one of the littlest Osmonds, as the entire Osmond clan lines up for a group picture.

See more behind-the-scenes photos with the Osmonds!