What
makes the film astonishing is Paul Anderson's way to use the cameras
and edit the movie. Event Horizon has very unusual (but good) camera
angles and lots of fast editing. Now those things are very important for
a horror film like this one. Another good point is the awesome music score
by Michael Kamen. I have the soundtrack and when I listen to it,
I get really nervous. And isn't that what horror films should do to you?
What about the actors? Some of them are excellent but some are really
not so good. Sam Neill's character is eventually the best. There
is something very professional in the way Neill handles his
role of Dr. William Weir. I think that Sean Pertwee did also a great
job as Smith, the pilot. The rest of the cast is all right with the exception
of Jack Noseworthy.

There was two things which actually saved the end of the film. They are: 1) The survivors are the ones who had no contact with the Event Horizon whatsoever. 2) In the beginning Dr. Weir is seeing a nightmare about his dead wife (and he had invented the ship). In the end, one of the survivors saw a "hallucination" of, well, the bad guy. So, we can presume that the evil of Event Horizon is still alive! I like that. Of course, there could've been even a better ending. Has anyone seen Roman Polanski's Fearless Vampire Killers? There is a really great end. Or George A. Romero's The Night Of The Living Dead! That was awesome, too.
Still, Event Horizon has so many good things in it, that it is good. I especially want to point out the music, the editing by Martin Hunter (he has worked with Anderson also in Mortal Kombat and Soldier) and the superb direction by Anderson. Really an enjoyable horror film! And you know, it is scary too!