Trivia: When Jigsaw and Eric escape the lair via a hidden elevator, the film's low budget prevented the construction of an actual working elevator. Thus, some trick photography and editing was implemented. For the first shot of Jigsaw and Eric "going down", the scene was shot by raising the camera vertically to give the impression they were descending. For the next wide shot, simple digital effects were added to make it appear that the room was "lowering." And for the final shot where we see the top of the elevator going down an elevator shaft, stock footage from the film "Hollow Man" was used.
Trivia: Because everything was shot against a green screen, some bits of colour proved difficult. Yellow Bastard especially was hard, as yellow bleeds into the green screen and can't be separated cleanly. To get around this, Robert Rodriguez painted him blue, then turned him yellow in post production.
Trivia: At the very end of the film, when the group uses the Improbability Drive to go to the Restaurant at the End of the Universe, there are a lot of images that flash onto the screen when the drive is activated, so in the other parts of the film. In this case, the very last image shown is the face of Douglas Adams, the creator of the Hitchhiker series.
Trivia: Stay after the credits. There's an additional scene where John goes to visit Chas' grave and leaves a lighter, then as he's walking away you see Chas with wings and he flies up into the sky. (01:54:40)
Trivia: Robert Fiveson, the producer of the 1979 B movie "Parts: The Clonus Horror" sued Dreamworks, Warner Brothers, Michael Bay and the producers of "The Island", citing over ninety similarities between the films. Despite the fact that he was a long forgotten producer of low budget films and he was up against the biggest names in Hollywood, he settled out of court for an undisclosed "seven figure sum" and 15% of the net profits of "The Island." Since it cost £126,000,000 plus advertising and netted just £81,000,000, I hope he got his seven figure sum.
Trivia: There is an actual band in Canada called the Wyrd Sisters who tried to stop the November 18th release of 'Goblet of Fire' in Canada because there is a band of the same name in the movie, but they lost their case.