Pandorum:
Takes place in a spacecraft, where a crewmember wakes prematurely from his cryostasis. And something's WRONG. Like, there's no one else around wrong, like the ship main power's down wrong, like he doesn't remember even his own name wrong. So yeah, shit's happening, and you, following his perspective, don't know jack at the beginning, so, time to investigate the creepy, dark spacetomb, I mean spaceship...
The ambience of the movie's good, the acting's good as well, and the twists near the end add nicely to it. The explanation of where the name 'pandorum' comes is interesting, in a disturbing sort of way...
I'd give it 4/5 (not commiting to 5/5 until I get to see Event Horizon, reckon no one plays creepy as well as Sam Neill)