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)
Trivia: In the opening scene when Charlotte and Tiana are children, the camera scans Charlotte's bedroom. The tea set on the floor has 'Mrs. Potts & Chip' from "Beauty & the Beast" sitting on a tray. (00:01:25)
Trivia: You can see Volterra's tower and the red-cloaked revelers from the festival of San Marco on the cover of Bella's copy of Romeo and Juliet when she wakes up in her bedroom. (Per director Chris Weitz.)