Joaquin Phoenix's senses may have departed him during a bizarre interview on "The David Letterman Show." Phoenix appeared dazed, swore, and stuck his gum beneath Letterman's desk. Some believe Phoenix's behavior is merely a stunt, especially since Casey Affleck is constantly following and filming him. Richie Buxo/Splash News - February 11, 2009
Week In Photos: February 8-14, 2009
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