If you like moves that make you think, that don’t hold your hand, and force multiple viewings just to undestand, then do yourself a favor and go rent Primer. This low-budget ($7000) indy movie turned a lot of heads at the last Sundance, and for good reason. It’s one of the smartest science fiction movies I’ve seen. The script is superb and the acting and dialog is incredibly natural and realistic, capturing the personality and dynamics of engineers perfectly. It’s also a total mindfuck. This movie actually has multiple penises enabling it to simultaneously mindfuck you through any of the available orifices that lead to your brain.