Brainstorm

Because of the immensely troubled production and disagreements with MGM, Douglas Trumbull opted never to direct a Hollywood film again. In 1983 he stated, "I have no interest . . . in doing another Hollywood feature film . . . Absolutely none. The movie business is so totally screwed-up that I just don't have the energy to invest three or four years in a feature film. Moviemaking is like waging war. It destroys your personal life, too. The people who can survive the process of making films have largely given up their personal lives in order to do that, just because it's such a battle to make a movie. And in doing that, they've isolated themselves from the very audience that they're trying to reach."

Several of the tapes play back from a third-person perspective, which would be impossible if the tapes were actually a person's recorded memory.

After the final credit has rolled, 'TO NATALIE' appears for a couple seconds

In the psychotic episode sequence when Michael's (Christopher Walken) son Chris (Jason Lively) wears the headset, there's a slight difference between the 70mm version and 35mm version. In the 70mm version of Chris's hallucination when Michael flips a lever presumably sending an electrical current to Chris's head, the camera cuts to and remains on a shot of a circular device with electricity running through it, as Michael is heard to say, 'Now you're gonna find out it's mine!' In the 35mm version, the shot arrangement is the same except that it cuts back to a closeup of Michael saying the line 'Now you're gonna find out it's mine!'