I saw that Event Horizon was coming on late Friday night, and wanted to check it out again in HD. (I believe it was on Cinemax HD.) I was pleasantly surprised by two things: 1) It was OAR; 2) It was waaaay better than I remembered. I think that I was young and foolish when it first came out in 1997; I remember being very disappointed at the time -- but now, with expectations sufficiently lowered, it was very enjoyable.
If you are in the mood for a big-budget "B" movie that mixes sci-fi and horror, then this will be right up your alley. It has Sam Neil and a pre-Matrix Larry Fishburne. Kind of a cross between Alien and Hellraiser.
Did I mention it was OAR 2.35:1?