Trivia: When composer Éric Serra showed Inva Mula, the Albanian soprano who was going to sing the Diva Dance, the sheet music for that part, apparently she laughed and said that it was impossible for the human voice to switch from high to low notes that quickly. She got her way: The part that ended up in the film is not a single piece of audio, rather it's several pieces stitched meticulously together.
Trivia: During filming, George Clooney paid a visit to his friends on the set of "ER" wearing the batsuit.
Trivia: In the scene with George swinging from the Bay Bridge in San Francisco, that's actually Brendan Fraser, not a stuntman. He enjoyed the rush so much that he requested an extra take just to swing again.
Trivia: Sigourney Weaver actually makes the basketball shot. Even though the ball is out of shot for a second, she made the shot with no assistance. The shot cuts quickly because Ron Perlman dropped character in celebration, which can be seen in deleted scenes online.
Trivia: John Woo fought to keep the slash in the title, so moviegoers wouldn't think it was a film about hockey.
Trivia: One of the secretaries tells the president she can send a fax to the White House, and he replies something like: "If this works, I'll make you Postmaster General". In the closing credits, she's credited as "Future Postmaster General".
Trivia: The "sh!" scene between Dr. Evil and Scott was improvised by Mike Myers and Seth Green.
Trivia: At the end of the movie, the plane is crashing into the front of a casino. This building is actually The Sands hotel. The scene was done a few weeks/months before the hotel was demolished, this way the damages to the hotels entrance as the plane was launched into it didn't matter.
Trivia: Hammond doesn't appear in the second book (though he does in the second movie). This is because, in the book series, Hammond was killed in the first book. He slipped, broke his ankle and was fatally attacked by compies.
Trivia: At the dinner ceremony where Spawn attacks Wynn and kills Church, you can see a red-headed woman in a blue gown walking among the patrons in the beginning of the scene. The camera focuses on her briefly, but for a reason - look at her earrings. They are Spawn insignia. This is a reference to the angel Hellspawn hunter Angela, who wears those same insignia in the comics as trophies of her victories over previous Hellspawn. Very clever reference.
Trivia: The view that people acquired citizenship and the right to vote through military service reflected the views of "Starship Troopers" author Robert Heinlein. His views were influenced by his years in military service during World War II, and what he saw as the supposed "laziness" of civilians.
Trivia: When we see Paul in the van as it is taken over by the overflowing river, just as he hits the water, we hear the Wilhelm scream.
Trivia: In the last scene where Dunn, is watching the TV in the store window and he looks over and says to the guy standing next to him, "Hey, you look just like that guy", it is actually his stunt double.
Trivia: After Teri Hatcher's character has been murdered, James Bond (Pierce Brosnan) shoots dead her killer (Vincent Schiavelli). When he does so, the expended bullet cartridge ejects very, very quickly and hits Brosnan squarely on the forehead.
Trivia: In the beginning of the movie, when Rayden 'shoots himself' against Kahn, he makes a strange cry, which is actually from the Mortal Kombat II games.
Trivia: The lava was primarily made of methylcellulose, the thickening agent used in fast-food milkshakes, and the ash was made mostly of ground newspaper.
Trivia: Capitan Gonza's head looks just like the crone Yubaba's green bouncing head pets in director Hayao Miyazaki's 2001 film "Spirited Away."
Trivia: The voiceover radio broadcast at the end of the movie is spoken by Roger Moore - the original Saint from the TV series.
Trivia: This was Kiefer Sutherland's feature film debut as a director.