Plot hole: The must be a lot of dumb scientists in Sebastian's lab. While defibrillating the invisible gorilla, (s)he becomes completely visible for a moment. However, not once do the scientists consider that applying a mild electrical shock to the system renders the invisible animal visible again - that electricity may be the key to the whole invisibility problem. They don't even comment upon the fact that the gorilla does become visible.
Trivia: Whenever Sebastian is invisible and interacting with the other characters, Kevin Bacon's voice would be broadcast throughout several speakers randomly hidden throughout the set. This was done to make the reaction more genuine, since the actors would honestly not know where his voice was going to come from next, just as the characters would not know where Sebastian was.
Trivia: The infamous scene where Sebastian kills a dog was thoroughly investigated by the ASPCA - a non-profit animal welfare advocacy group. They reportedly felt the scene (despite being only shown in heat-vision footage) was so graphic, they suspected it might have been real. Director Paul Verhoeven ended up having to demonstrate how the scene was accomplished - star Kevin Bacon picks up a real dog, but through some slight trickery, was able to quickly switch it out with a realistic fake dog filled with stage-blood when he goes out of frame for about a second.
Trivia: A scene in which Sebastian brutally and graphically rapes his neighbor was filmed, but was mostly deleted as test-audiences felt it made Sebastian far too evil. And thus, the version of the scene in the theatrical cut only alludes to the idea without directly showing it. The original scene was reinstated in the director's cut released on DVD and Blu-Ray however.
Sebastian: I can't take much more testing.
Matt: I know how hard it is.
Sebastian: Bullshit. You don't know anything.
Matt: This isn't easy for any of us.
Sebastian: Fuck you, Matt! It is easy for you. I was to be in phase-shift for three days. It's been ten fucking days, all right? Ten days of tissue tests, radiation tests and your fucking needles! I can't fucking take it anymore.
Matt: What I meant was.
Sebastian: Fuck what you meant! And don't ever... Don't ever tell me how hard you have it.
Question: Two songs were playing in Sebastian's car. One song as noticed twice was 'Power Struggle'. He was listening to another song later on in the movie. What was the name of this song and who plays it?