Trivia: Have a close look at the Predator's trophy collection on his spaceship. Taking pride of place is a skull from the creature in the Alien movies. (01:33:05)
Trivia: When the Terminator reboots himself in the hangar in order to get rid of the influence of the T-X, the scrolling text includes "Quicktime Player - Access" and "MP3.com - No Access." (01:30:15)
Trivia: Michael Myers' mask is a Captain Kirk mask painted white with ruffled hair and a few other tweaks.
Trivia: Alfred Hitchcock's cameo comes at the end of the opening credits. He can be seen missing the bus.
Trivia: The two old men near the end, talking about it being "old school" are voiced by Frank Thomas and Ollie Johnston, two Walt Disney animators who worked on such classics as Bambi and Cinderella.
Trivia: The movie being about the start of a major worldwide war (with a heavy use of technology too), an interesting coincidence can be seen in the first truck chase sequence. Just as John and the Terminator speed under the bridge that the T-1000 crashes into, a height warning on the bridge can be read which says "CAUTION 9-11". The truck smashes right into it. (00:36:15)
Trivia: Mystique transforms into a blonde woman to seduce the security guard. This blonde woman is actually the normal appearance of Rebecca Romijn-Stamos, who plays Mystique. It's the only time we see her without the blue makeup until she's depowered in X-Men 3.
Trivia: Ike Eisenmann and Kim Richards, who played Tony and Tina in the original Escape to Witch Mountain, make cameos as a sheriff and waitress, respectively.
Trivia: Author and writer of the book and script William Peter Blatty has a cameo early in this film. He plays the producer trying to have a word with director Burke Dennings on the movie set before Burke turns his attention to Chris MacNeil. William Peter Blatty is the middle eastern-looking guy with the black hair and moustache, which is natural since his mother is originally from Lebanon.
Trivia: Alfred Hitchcock makes a cameo during the scene when Marion Crane walks into her office - he is standing outside the office on the right. (00:07:00)
Trivia: In Carlotta's dressing room there is a large portrait of Carlotta holding Andrew Lloyd Webber's head on a plate.
Trivia: At the ranger's office when the security guard was stealing the medical supplies, you see a cameo of M. Night Shamalayan in the reflection of the glass.
Trivia: When Henry Winkler is looking for the "kids" that keep knocking on his door, he opens one door and surprises a cleaner. The cleaner is dressed like Freddy Krueger, is called Fred, and is played by Wes Craven himself. (00:49:55)
Trivia: This is for the trailer rather than for the final film, but worth a look. At 1:33 in the trailer, just after seeing Rorschach slam someone against a wall, we see another fight. Pause it and look at the guy in black - he's holding a walkie-talkie, which in the next shot becomes a gun. This is only trivia, not a mistake, because it's only valid for the trailer. The MPAA don't allow guns to be pointed at the screen in trailers, so Zack Snyder, in a tribute to the infamous gun-editing from E.T., replaced the gun in that one shot with a walkie-talkie. (00:01:30)