If you liked the movie Donnie Darko then may I suggest you check out the newest Richard Kelly film called Southland Tales. This sophomoric release seems to be following it's predecessor by not doing super well at the box office but will more than likely be another cult classic. Donnie Darko opened poorly and most folks never heard of it till DVD. Now it is on the imdb.com all time top 100 list. Not too shabby.
This new film has quite a star studded cast as well. I suggest checking it out if it is still at your local theatre!