Trivia: When the Christians fire their first volley at the Muslims, one of the guys screams a Wilhelm as he falls.
Trivia: After every time travel safari, Charles Hatton greets and welcomes back his guests, comparing them to Columbus, Marco Polo, Armstrong, and 'Brubaker landing on Mars.' In 1978, director Peter Hyams, directed Capricorn One [and A Sound of Thunder], a film about a staged travel to Mars. Three astronauts were involved - Lt. Willis, Cmdr. Walker, and Col. Brubaker.
Trivia: In the American version of this film Jessica Alba's bikini bottoms were digitally extended to cover her buttocks. In the European version they remain the same.
Trivia: Ben Affleck actually filmed a scene with Garner as a cameo of his "Daredevil" character Matt Murdock. But because they were in a romantic relationship at the time, the studio wanted to avoid any "Affleck/Garner" type publicity and cut the scene.
Trivia: When Crazy Dave is putting the chain on Herbie at his yard, Herbie squirts oil all over his foot. This is a reference to the 1968 film "The Love Bug", in which Herbie did exactly the same thing to Thorndyke (David Tomlinson).
Trivia: To make Lisa frozen in the movie, the director had sculptors and painters make a life replica of Kristen Stewart through body scans.
Trivia: At the part where the band arrives to play for the evil witch, one of the band members states "We've had the same stinking tour bus since 1978" which is referring to "The Great Muppet Movie" (made in 1978) in which they first mention the tour bus.
Trivia: The scene of Alejandro and Toronado leaning on a house wall, stark drunk, is a homage to Lee Marvin's role as Kid Shelleen in the movie "Cat Ballou".
Trivia: Rob Cohen (director of the first film) and Vin Diesel (star of the first film) had both signed on to work on this sequel. Cohen had even begun early work on the project, after having very much enjoyed working on the first film. However, due to time constraints and scheduling conflicts with other projects, both had to drop out of their respective roles, and Diesel Xander was unceremoniously "killed off." Both Diesel and Cohen were unsatisfied with this film, with Diesel in particular expressing an interest to return. Diesel later brought the series back with 2017's "xXx: Return of Xander Cage."
Trivia: Due to the potential dangers of filming in a real cave the entirety of the film was shot on sets. Twenty one "caves" were built for the shoot.
Trivia: Production was suspended for over a month whilst Charlize Theron recovered from a neck injury she suffered doing stunt work on the tenth day of shooting. She was in hospital for five days and needed about six weeks of physiotherapy to recover.