It's been five years since Brian Williams took over the anchor chair from the retiring Tom Brokaw on NBC Nightly News, and he's proven to be a capable choice indeed. Brian Williams now take your questions
The host of A Prairie Home Companion marks 40 years in radio. Garrison Keillor will now take your questions
The Foo Fighters guitarist talks Nirvana, Greatest Hits and chewing gum. Dave Grohl will now take your questions
The Today weatherman's first novel, The Morning Show Murders, is on stands. Al Roker will now take your questions
The High School Musical star grows up in Me and Orson Welles, out Nov. 25. Zac Efron will now take your questions
The veteran skateboarder's new video game, Ride, is out Nov. 17. Tony Hawk will now take your questions
The actor stars in the new film The Men Who Stare at Goats. Ewan McGregor will now take your questions
The Colombian pop star's latest album, She Wolf, is out in November. Shakira will now take your questions
Michigan's Canadian-born governor on her state's challenges. Jennifer Granholm will now take your questions
The 30 Rock star discusses comedy and his new memoir, I Am the New Black
The Nobel Prize-winning microcredit guru believes in a poverty-free world. Muhammad Yunus will now take your questions
The former U.N. head is campaigning for a climate-change deal. Kofi Annan will now take your questions
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