Who Was 2009's Best TV Guest Star?

From Oprah to Jerry Seinfeld, see the celebs who took winning turns on your favorite shows. By Jennifer Graham-Kizer (11 Photos)

Jennifer Graham Kizer on Dec 28, 2009 at 11:03AM

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Who Was 2009's Best TV Guest Star?

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John Lithgow on 'Dexter'

The bathtub murder scene in the season 4 finale of Showtime's Dexter earns John Lithgow our award for 2009's creepiest TV killer. As Arthur Mitchell, the Trinity Killer who took lives in threes (the first one always in a bathtub), he slowly suffocates a key character while a jaunty, buoyant song, "Singing in the Bathtub" (recorded in Lithgow's voice) underscores the gruesome action. As a human being, Dexter (Michael C. Hall) is repulsed and horrified. As a killer himself, one wonders if he's slightly awed.

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