Deadline is reporting that actor Paul Giamatti has joined the cast of The Hangover 2.

It isn't clear what type of role Paul Giamatti may have in the sequel, although it's said he will join the cast in Thailand in a few weeks. Paul Giamatti is the latest newcomer to join the comedy sequel, with Jamie Chung also signing on, as we reported last week. Liam Neeson also has a cameo in the movie, replacing controversial actor Mel Gibson.

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Todd Phillips is directing The Hangover 2 from a script by Scot Armstrong.