COUNTDOWN: Keith Olbermann Fired from MSNBC

Keith Olbermann delivers a heartfelt and not-at-all angry final sign-off after revealing that he has been fired from MSNBC.

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JIMMY KIMMEL: Ryan Gosling Ukulele Duet

Jimmy Kimmel joins Ryan Gosling to perform his song from Blue Valentine.

PIERS MORGAN: Rudy Giuliani Wants to Take on Sarah Palin

Appearing on Piers Morgan Tonight, Rudy Giuliani dares Sarah Palin to run against him in 2012.

COLBERT REPORT: Remembering JFK's Inaugural Address

On the occasion of its 50th anniversary, Stephen Colbert shows how today's conservative pundits would react to President Kennedy's inaugural address.

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DAILY SHOW: Voice of America's 'Parazit'

Jon Stewart interviews the Iranian versions of himself.

"You're like our show but with real guts."

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CONAN: Marc Maron's Stalker

Conan throws a bone to his hardcore comedy fans by doing an extended interview with Marc Maron (and agreeing to go to his garage to be a guest on the WTF podcast).

CNN: Joan Rivers Defends Ricky Gervais

Anderson Cooper has a postmortem on Piers Morgan's Ricky Gervais interview with Joan Rivers.

Trailer: Tracy Morgan in 'Son of No One'

Tracy Morgan (not Tracy Jordan) is actually going to Sundance with this role in a serious film co-starring Al Pacino, Ray Liotta, Juliette Binoche, Channing Tatum and Katie Holmes.

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30 ROCK: Elizabeth Lemon-Donaghy's Press Conference

Jack's new accidental wife purposefully donates his money to a performing arts school.

PARKS AND REC: Ron Swanson's Pyramid of Greatness

Ron Swanson uses his Pyramid of Greatness in his new role as basketball coach.

THE OFFICE: Andy Rollerskates to Dave Matthews Band

Andy goes to the roller rink with Darrell and Dwight to meet loose women, but ends up skating by himself to "Ants Marching."

COMMUNITY: Chang Doesn't Know How to Slow Clap

Senor Chang is "guilty as Chang'ed" at not knowing that "you can't talk and then do a slow clap." Additional props to Malcolm-Jamal Warner wearing a Cosby sweater and saying his Dad gave it to him.