Directed by: Paul W.S. Anderson
Starring: Laurence Fishburne, Sam Neill, Jason Isaacs, Joely Richardson, Kathleen Quinlan
Revealing mistake: In the scene where Sam Neill has set the bomb to blow up the rescue ship, Laurence Fishburne comes running up to the sealed door of the Event Horizon whereupon it shakes back and forth like a stage door would.
Revealing mistake: During the opening scene, when the camera is starting to zoom in on the ship outside earth's atmosphere - the view of the crew inside zooms in quicker than the camera moving in to zoom into the cockpit.
Revealing mistake: In the scene where Sam Neill has set the bomb to blow up the rescue ship, Laurence Fishburne comes running up to the sealed door of the Event Horizon whereupon it shakes back and forth like a stage door would.
Dr. Weir: What was made public about the Event Horizon - that she was a deep space research vessel, that her reactor went critical, and that the ship blew up - none of that is true. The Event Horizon is the culmination of a secret government project to create a spacecraft capable of faster-than-light flight.
Smith: Uhm, excuse me. See, you can't actually do that.
Trivia: An "event horizon" is the gravitational boundary which encloses or encompasses a black hole, from which no light escapes whatsoever.
Question: Why did the Event Horizon choose to come back after seven years? In fact, why come back at all?
Answer: With the recent Event Horizon prequel comic, it is established that Event Horizon is not in the Warhammer universe and there is a king of hell in the film. His name is Paimon.
Chosen answer: The movie never explicitly says; but science is as yet unsure what happens to a given piece of matter once it crosses a black hole's event horizon, so who knows? The ship could have been thrown seven years forward in time, or far enough away that it took seven years for it to drift close to Neptune. Pick any explanation you like.
The theory that the film is a stealth prequel to the 'Warhammer 40,000' universe has been confirmed by one of the writers, who was a big fan of 40K and said that the setting influenced his writing "either consciously or subconsciously" – because Games Workshop is litigious. But since the Horizon entered into the Warp, time there flows extremely differently from time in real space; while it was seven years for people in real space, it could have been seconds, or thousands of years, for the ship.