Home Bradley Cooper, Ed Helms, Heather Graham at ‘The Hangover’ Celebrity Charity Poker Tournament Heather Graham at 'The Hangover' Poker Tournament at Caesars Palace

Heather Graham at ‘The Hangover’ Poker Tournament at Caesars Palace

Director Todd Phillips at 'The Hangover' Poker Tournament at Caesars Palace

Zach Galifianakis (right) and his dad Harry at 'The Hangover' Poker Tournament

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