Event Horizon has gone further than they could realize.

Rating: 8/10 (4 January 2007)

Very interesting space/terror movie, featuring all-time terror star Sam Neill.
The blend of terror and space themes leads to a refreshing approach in both styles, though the horror fans would be much more pleased with the final results, because of its extensive (and somewhat shocking, in good sense) use of blood/gore elements and no mercy with the life and sanity of the main characters.
Intelligent references to classics such as Kubrick's "2001" and good storyline make it a worth watching effot, but the "standard" climax make the end quite predictable to the more experienced watchers.
Anyway, the developing of Sam Neill's character and it's relationship with the Event Horizon is thrilling, and extensively creepy by the end of the movie, in such a way you can't turn out the eyes.
I think it's specially indicated to the Clive Barker's Hellraiser series fans, as the trans-dimensional suffering and torture dimension where Event Horizon claim to have been and the final portrait of Neill's character refers more to the original spirit of the Pinhead series than most of the actuals sequels of it. As a series fan, I have to say that it would be a much more cool and creative ending if we had the cenobites in the Event Horizon by the end of the movie.
No matter this opinion, very much worth watching EH just the way it is.