Michael Kosta

Michael Kosta is a former professional tennis player turned comedian. He has appeared on "The Tonight Show," and this year he performed in his first stand-up special, "Comedy Central Presents: Michael Kosta." Michael was also chosen to host the backstage live show for the 63rd Annual Emmy Awards. He also made his Conan debut in the fall of 2011. You may also recognize Michael’s sarcastic banter from his appearances on "Chelsea Lately" on the E! Channel, TruTV’s "Smoking Gun Presents," Yahoo!’s OMG411, and Showtime’s "Live Nude Comedy." Follow Michael on twitter and facebook. Watch Michael's sports show.

Tim Wilson

For years comedian, songwriter and philosopher, Tim Wilson has been joining us on the air and in that time has treated us to a number of classic tunes such as My Brother In-Law, I Could Be Wrong and Church League Softball Fistfight. And though he's one of our most frequent guests, it's still an adventure every time he stops by, thanks in part to his uncanny ability to find a story to go along with any topic of conversation. But as a warning, if you're even talking to Tim, try to avoid mentioning The Bible, NASCAR, credit cards or Jimmy Carter. In other news, Tim turned author and wrote a book about serial killer Ted Bundy which is now on sale. Pick up your copy of Happy New Year - ted today.