Primer is not from a studio, it hada very small-scale release and it's a $7000 budget movie, but it just may be one of the best treatments of time travel I have ever seen! There is almost no exposition, the science is not "dumbed down", and the dialogue is naturalistic...be warned, it isn't that easy to follow, but it's well worth a look at a relatively short running time of 77 minutes.
Spoilers! There is a guide on Wikipedia, but watch the movie first!
http://www.amazon.com/Primer-Shane-...1_1?s=movies-tv&ie=UTF8&qid=1338248002&sr=1-1
http://en.wikipedia.org/wiki/Primer_%28film%29
http://en.wikipedia.org/wiki/File:Time_Travel_Method-2.svg
Spoilers! There is a guide on Wikipedia, but watch the movie first!
http://www.amazon.com/Primer-Shane-...1_1?s=movies-tv&ie=UTF8&qid=1338248002&sr=1-1
http://en.wikipedia.org/wiki/Primer_%28film%29
http://en.wikipedia.org/wiki/File:Time_Travel_Method-2.svg