Zacharius Knight "Zach" Galifianakis (born October 1, 1969) is an American comedian and actor, known for numerous film and television appearances including his own Comedy Central Presents special. He is known for his unconventional stand-up style, that features the reading of one-liners while playing a piano during his performances. He garnered mainstream attention with his breakthrough role in the successful 2009 comedy The Hangover.
Galifianakis' career began on television in 1996, when he played the recurring role of a stoner named Billy in the short-lived sitcom Boston Common. In 2001, Galifianakis co-starred in the film Out Cold. He has had small roles in Corky Romano, Below, Bubble Boy, Heartbreakers, and Into the Wild. In 2007 he appeared as himself in Super High Me. He had several films come out in 2008: What Happens in Vegas, Visioneers, Little Fish Strange Pond and the documentary Largo.
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