It's scientifically inappropriate, which is why it's fiction and also horror.

Rating: 6/10 (25 November 2008)

The reason why it's horror is because it has gore. The reason why it has science-fiction is because using a black hole as dimensional travel is about as delusional as say... Catapulting yourself down the Canyon and expecting the rocks to soften as you fall on them.
Event Horizon refers to the moment where you cross a black hole's edges. Where there is no chance of return whatsoever. So this movie seems to pretend that beyond the Event Horizon, there is another dimension. This is unproven but unlikely. Fiction comes in play at this point, whereas a scientist would have been able to build a mechanism which allows a ship to travel from one point in the other. In this place, the "Event Horizon" spaceship.
The spaceship is then used for extra-system travel, where it will discover regions beyond the milky way. Bold enterprise, as the ship and its crew discover only to be found years later. The scientist is sent aboard a rescue ship, whose crew consists of growling men and wise women. Well, the choice of crew is rather justified, because they are all astronauts that were looking to enjoy their little vacation back on earth. So they don't take kindly to the good "Doctor"'s presence.
You'll imagine the Doctor's feeling rather ambitious about seeing his spaceship again. Of course, getting there, the doctor starts to get hallucinations of his dead wife, provided by the ship itself. What doesn't make much sense is that he gets these hallucinations BEFORE getting on the ship, while the other members of the crew don't get any until they arrive on-board.
Don't worry though, the movie offers a lot more plot holes like these. Does that make it a bad movie? No, the story's believable as long as you hold it to yourself to escape reality for a while. So what makes the movie not so enjoyable here? The acting. I'm not sure if all the actors forgot their faces at work, especially Mr.Fishburne, but they all seemed rather dead-eyed for the most part. Laurence Fishburne often yells without bearing any conviction to his words on his face or overall body. Same with some other characters, while a select few do show appropriate emotions. Unfortunately, we're treated to the stereo-typical black man-in-astronaut gangsta.
I mean is it really necessary for black people to always be imaged as the dumb types? Whatever, seeing as Sam Neil and Fishburne are often on-screen, you'd expect better prestations from them. None of it.
I personally disagree that this is a bad movie but it's certainly nothing to be awed at. The executions for the characters are all very poetic in a way, but they're so theatrical that it makes them less terrifying, in my opinion.
Kind of like watching a play and seeing the main protagonist be given a speech before being executed.
Do watch this movie, even for the sake of just having watched it once.