Another movie similar to this (I think, having not seen the movie, but from reading the discussions) is Momento: http://en.wikipedia.org/wiki/Memento_%28film%29
IMO it stays with you a long time after you've watched it..
IMO it stays with you a long time after you've watched it..
Primer, on the other hand doesn't use a single editing gimmick or plot twist, but rather does a deep drive in the mind bending situations that can occur when time travel becomes possible.
I can't say I've watched Momento more than once. I guess that says something in itself.
I'll definitely be getting a copy of Primer now!