Trivia: At the beginning of the attack in the graveyard, just after Hit Girl is knocked out, the gravestone says 'Rest in Piece' rather than 'Peace'. (01:17:55)
Trivia: The director, Tommy Wirkola, has an uncredited cameo of sorts (seen on screen longer than a usual cameo) as one of Sheriff Berringer's four deputies. Stuntman Wolfgang Lindner portrayed one of the deputies, and is uncredited as well.
Trivia: When a motorcyclist trips over a rock during a chase scene, he yells a Wilhelm scream.
Trivia: The Boeing 747 (G-BDXJ) seen in the background during the climactic scene at the airport is the same one used in Casino Royale to depict the prototype aeroplane at Miami. It is also seen in many episodes of the UK television series Top Gear.
Trivia: The opening scene was supposed to be a reference to "Saturday Night Fever", but the production could not afford the proper soundtrack, and thus, Bill "strutting" down the street for a prolonged period now lacks any frame of reference.
Trivia: In the batcave, the batmobile lifted by Bruce is the design from Tim Burton's Batman and Batman Returns films.
Trivia: Ben Kingsley's Maori facial tattoos took about an hour to apply for the character Mazer Rackham.