This was a great movie, worth seeing. Regarding paradoxes concerning time, this movie is probably the second best I've seen in terms of being believable. That is, in trying to think about how all the events at different times can coherently co-exist with each other, it almost makes perfect sense in this movie (unlike, e.g., the Terminator movies, and the Back to the Future movies - not that I am complaining about those movies, I'm not). I say "almost" because there are a few things that very much seem like incoherencies (though they are not necessarily so!). The best movie I've seen pertaining to this issue, of preserving coherence, is Twelve Monkeys, but Deja Vu should not necessarily be judged on the same standard, since the nature of time seems to be presented as being slightly different. What I want to know is, after a main character is sent into the "past," was the other character in the "present" who sent this character into the "past" watching the ensuing "past" events on the screen? If so, could he keep watching indefinitely, or only for a certain amount of time? Is the fact that the movie never shifts back to the (original) "present" point of view meant to make some point, or is it just to avoid dealing with complications?