Josh Groban just sang something from The Wizard of Oz to Oprah. We celebrated right afterward.

John Quiñones @JohnQABC & I go undercover today for an Oz show What Would You Do? @WWYDABC http://bit.ly/9mYDIY

@HealthCorps Gala with my friend Hugh Jackman and my daughter Zoe #HCGala11

On the @HealthCorps red carpet with Russell Simmons, Muhtar Kent and my wife Lisa #HCGala11

Today is Spirit Day. I'm wearing purple to support LGBT youth. Stop the bullying. http://www.glaad.org/

Oprah, my special Assistant of the Day, and Mayor Daley toasted to the 1st Dr. Oz Health Expo: Nov 6 in Chicago

I had a great time shooting this week's TV Guide cover with my friends Oprah, Nate Berkus and Dr. Phil.

Backstage with Dr. Phil - who I just met this morning! - and Nate. About to walk out.

Backstage with Dr. Phil - who I just met this morning! - and Nate. About to walk out.

10 min until showtime

And the crowd has already stormed the stage

Backstage with Suze and Nate. 40 min and we are live

At rehearsal for the big show. Check out the massive stage

Crowd starting to come in. This place is huge

The line is insane -- literally around the block

Getting ready for the live show with Oprah at Radio City