Trivia: As Mel Gibson, Danny Glover and Chris Rock leave the Chinese restaurant (down the stairs), you can see the umbrella handed to Chris Rock hit him in the face.
Trivia: Jackie Chan was originally offered the role of Wah Sing Su, but turned it down because he chooses never to play a villain in a movie.
Answer: It was put in the film to introduce the concept of Rianne and Lorna being pregnant and to bring in the joke about the news article about Roger, not to mention giving the film an action-heavy opening.