TV: Sneak Peek - Bob Costas Guests on NBC's GO ON

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Bob Costas guest stars on an all-new episode of the NBC comedy Go On entitled 'Win At All Costas.' In the episode, Ryan (Matthew Perry) receives an invitation from Bob Costas, his hero, to take part on his new TV show while Fausta (Tonita Castro) invites everyone in the group to her niece's Quincenierra - everyone except Anne (Julie White).

Meanwhile, after completing a major project at work, Mr. K (Brett Gelman) searches to find a new way to contribute and make a difference.Laura Benanti, Tyler James Williams and Suzy Nakamura also star. The episode airs January 8, 2013 at 9:00 pm/ET on NBC. Get a sneak peek below!

Matthew Perry ("Friends," "Mr. Sunshine") stars as Ryan King, a recent widower and sports talk radio host ready to get back to work after the loss of his wife. Ryan's alpha-male boss, Steven (John Cho, "Star Trek," "Harold & Kumar Go to White Castle"), has a different plan in store for Ryan, making him attend grief counseling before returning to the air.