People here might also enjoy the film "Primer" http://en.wikipedia.org/wiki/Primer_(film)
It's even more amazing considering that the guy who plays Aaron (one of two main characters) also wrote the script, directed, edited and produced the movie, and also composed the music ... drumroll .. all on a budget of seven thousand dollars !
Now showing on the Independent Film Channel (IFC) this month. Two showings today, Saturday 10/11. Running time: 80 minutes
Saturday, Oct. 11 at 11:15 AM EDT
Saturday, Oct. 11 at 4:00 PM EDT
Wednesday, Oct. 29 at 7:35 PM EDT
Thursday, Oct. 30 at 4:00 AM EDT