Trivia: When Hobart falls off the fence when Ramona is mowing the lawn, he yells a Wilhelm scream.
Trivia: Stay after the credits start rolling for a hilarious extra scene.
Trivia: David Seidler won an Academy Award for Best Original Screenplay for this film. At the age of 73, Seidler was the oldest person to win the Award.
Trivia: The Marni family's home in this movie is the same house Jamie Lee Curtis resided in in the 2003 movie Freaky Friday.
Trivia: Madame Varcolac's name is Romanian for werewolf.
Trivia: The Rolls Royce Phantom Coupe that Balthazar drives in this movie was owned by Nicolas Cage himself.
Trivia: The first film Wes Craven both wrote and directed since the release of "New Nightmare" 16 years earlier. It was also the final film Craven both wrote and directed before he tragically passed away. (While he did direct "Scream 4" the following year, he was not a credited writer on it).
Trivia: Juliette Lewis appears in this film, playing the same character from the comedy Old School, Heidi.
Trivia: This is a remake of a very famous French comedy, now a classic, Le dîner de cons (available in English as The Dinner Game), itself based on a play which was subsequently altered to conform to the minor changes made when the original movie was filmed.
Trivia: At one point, you can see Craig reading the book "Be More Chill." The book was written by Ned Vizzini, who was also the author of the novel "It's Kind of a Funny Story" on which this film is based.
Trivia: Leon Kennedy, a popular character from the games, was originally intended to be in the film but was dropped. He later appeared in the fifth film.
Trivia: Shia Labeouf did a lot of research with real financial traders in order to prepare for his role. He also made money ($389,000) on his investments based on what he learned.
Trivia: When Jack is entering the bar where he receives a letter from a friend, a song is played on the radio. The song is 'Tu vuò fà l'americano' by Italian singer Renato Carosone. It means 'You want to do American' or 'You're an American wannabe', a reference to Jack, who is American, and of course the title of the movie. (00:38:45 - 00:39:50)
Trivia: When a pine cone falls out of a tree and hits Yogi in the eye, a "Wilhelm scream" can be heard.
Trivia: When Eli and Solara are in his room for the night there is a movie poster on the wall behind them for a similar post apocalyptic movie. "A Boy and His Dog". In Eli the survivors protect themselves from the sun's rays and in "A Boy and His Dog" they flee underground to hide from the sun.
Trivia: Robert Pattinson was actually injured during breaks while doing a street scene - hordes of fans chased him out to the street and he was hit by a passing car. Though he was not fatally injured, he was somewhat shaken during the ordeal. Bodyguards and assistants came to his aid and shielded him from the overzealous admirers.