The comedy's US$20 million weekend haul boosted its take in the US and Canada US$115.6
million in three weeks.
Charlie and the Chocolate Factory dropped to second place, grossing US$16.3 million.
The superhero comedy Sky High, starring Kurt Russell, scored US$14.6 million and third place.
The opening of Stealth, starring Jamie Foxx and Josh Lucas in an action adventure about three top-secret military pilots who struggle to bring a rogue artificial intelligence program under control, was fourth with US$13.2 million.
The romantic comedy Must Love Dogs, starring John Cusack and Diane Lane, was fifth with box office receipts of US$12.8 million.
The comicbook hero adventure movie Fantastic Four was sixth with US$6.9 million, followed by suspense thriller The Island, about people trapped on an island populated by clones, with US$5.9 million.
The comedy Bad News Bears, starring Billy Bob Thornton in a remake of the 1976 hit starring Walter Matthau and Tatum O'Neal, was eighth with US$5.6 million, followed by Steven Spielberg's War of the Worlds, starring Tom Cruise, with US$5.4 million.
The French documentary March of the Penguins, the story of love and tenacity among Emperor penguins in the antarctic, rounded off the weekly top 10 with a weekend haul of US$4 million.
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