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Carter says his name is "Bubbles" while in the dressing room. "Bubbles" was the name of Michael Jackson's chimpanzee. Chris Tucker is a known Michael Jackson friend and fan.
The production crew agreed upon a twenty dollar fine anytime anyone's cell phone rang during shooting. The money would be donated to the homeless charity Chrysalis. By late February, it had over $600.
In the airplane scene, Carter orders gefilte fish, a reference to a similar scene in Rush Hour 2 (2001) that never made the final cut, because of Chris Tucker's inability to pronounce the name of the dish at the time.
Jackie Chan had a cracked sternum and bruises to his shins from his stunts. In the credits, there is an outtake where Chan throws a table backwards with his legs into himself, accidentally, in Genevieve's suite.
When Lee (Jackie Chan) is speaking to Kenji (Hiroyuki Sanada), the language is Japanese.