Well, I'll tell you this, the cast wasn't necessarily the problem. Sure there was some laughable acting done by Timberlake, but that's because he has done only one really dramatic role in his acting career in the movie The Social Network. What I'm trying to get at though is that the acting wasn't necessarily the problem, it was the script, the whole damn thing. The writers tried to hit on so many themes that it was hard to follow the actual theme of the movie. The couldn't decide between whether or not it was "Should people live forever" or "This is what our world is coming too". I know that I was supposed to feel connected to Salas and Weis most of all, but I felt more sympathy for the Timekeeper, Raymond Leon, that was chasing them throughout the whole movie. Call me crazy, but it just seemed that he had the most to loose in this whole affair and I felt that at times the movie was a little one sided. It seemed that they tried to hit on so many philosophical and obvious political themes, that it took away from the main theme of the story... whatever that was, it got lost towards the end.
Sci-fi movies can really be hit or miss. This one was a real miss. I would love to see it again though, if Mystery Science Theater 3000 did it. All in all a 5/10. Only see this movie if you have the time and/or money to waste.