Walter Bruce Willis, better known as Bruce Willis, is an American actor, producer, and musician. His career began in television in the 1980s and has continued both in television and film since, including comedic, dramatic, and action roles. He is well known for the role of John McClane in the Die Hard series, which were mostly critical and uniformly financial successes. He has also appeared in over sixty films, including box office successes like Pulp Fiction, Sin City... (Wikipedia)

Zacharius Knight "Zach" Galifianakis is an American stand-up comedian and actor, known for his numerous film and television appearances including his own Comedy Central Presents special. While initially more of an "underground" comedian, he has garnered mainstream attention for his role in the Todd Phillips-directed comedy film The Hangover... - www.wikipedia.org