Actor to star with Galifianakis in Phillips comedy

Warner Bros. has set Robert Downey Jr. to star with Zach Galifianakis in “Due Date,” the Todd Phillips-directed comedy that begins production this fall.

Downey will play an expectant father on a road trip with a mismatched partner, racing to get to the birth of his first child.

Phillips will produce through his Green Hat banner with Daniel Goldberg. Scott Budnick will be executive producer.

Galifianakis, who delivered a breakout performance this summer in the Phillips-directed comedy “The Hangover,” will play Downey’s road trip mate in a comedy that Phillips calls “a buddy comedy without the buddies.”

Script was written by Alan R. Cohen and Alan Freedland and revised by Adam Sztykiel. Shooting will begin Sept. 21 and take place in Atlanta, New Mexico and Los Angeles.

Deal comes just after the $34 million budgeted “The Hangover” crossed the $240 million domestic B.O. mark to pass “Beverly Hills Cop” and become the highest grossing R-rated comedy of all time.

Downey firmed his deal as he appeared at Comic-Con to promote Warner Bros.’ Christmas release of Guy Ritchie’s “Sherlock Holmes” and Paramount and Marvel’s May 7 release of Jon Favreau’s “Iron Man 2.”

CAA put together the deal.

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