Movie Recommendation: Primer

If you enjoyed 'Memento', and watched it more than once, and if you enjoyed 'Jacob's Ladder' from the early 90's and watched it more than once, you should run out and get a copy of 'Primer', a very low budget Sundance movie that revolves around a couple of engineers who stumble across a method of time travel. It's a movie that you should plan to watch it least twice before everything starts to make sense.