Primer (2004)

PRIMER  (2004)  ¢ ¢
    D: Shane Carruth
    Shane Carruth, David Sullivan, 
    Casey Gooden, Anand Upadhyaya
Two young technogeeks , working out of a garage and a storage locker, invent a time machine and (of course) use themselves as subjects. Apparently there's a chart out there somewhere that maps out all the resulting timelines, which get pretty mixed up, once the guys start going in and out of the box, and especially once their doubles enter the picture. For a lot of viewers, I'm not sure even that would help. Most of the movie is just Carruth and Sullivan talking, and they seem to have the puzzle pretty much worked out, but in the absence of an accessible narrative (and without a handy timeline map), it's hard to know what's going on, or care.