Buena Vista's "Chicken Little" grossed $40 million its debut week -- topping the U.S. box office, estimated boxofficemojo.com Sunday.

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Universal's "Jarhead" grossed $29 million its premiere week.

"Saw II," distributed by Lions Gate, made $17 million in it second week in release, for a total box office of $60 million, while Sony's "The Legend of Zorro" made $10 million for a total box office of $30 million. Universal's "Prime" made $5 million for a total box office of $13 million.

"Dreamer: Inspired by a True Story" made $4.8 million for a total box office of $24 million; "Good Night, and Good Luck" made $3.1 million for a total box office $11 million and "The Weather Man" made $2.9 million for a total box office of $8.7 million.

"Shopgirl" made $2.5 million for a total box office of $3.5 million and "Flightplan" made $2.3 million for a total box office of $84 million.