Trivia: In the film, Owen Wilson's parents are played by his real life parents. According to an interview, his mother's biggest problem was trying to remember to call him by his character's name, John, and not his real name.
Trivia: At John's surprise 40th birthday party, Dave Barry, columnist for the Miami Herald since 1983, has an uncredited cameo. When Jen comes in with the cake, he's at the right side of the screen wearing a dark shirt and holding a drink. (01:18:50)
Trivia: A total of 22 different dogs played the part of Marley.