Zacharius Knight "Zach" Galifianakis (respellgalIF-iaNAKiss; born October 1, 1969) is an American comedian and actor, known for numerous film and television appearances including his own Comedy Central Presents special. While initially more of an "underground (Alternative comedy)" comedian, he garnered mainstream attention with his role in the successful 2009 comedy film The Hangover (The Hangover (film)).