Most movies are too stimulating and obnoxious to me, but I do like The Elephant Man, from David Lynch.
I may have to add "Moon" with Sam Rockwell to my list. I watched it last night and again tonight and I really enjoyed it. It's old school sci-fi that has obviously been inspired by movies like 2001 (Complete with AI voiced by Kevin Spacey), Alien, Silent Runnings, Bladerunner, etc, but it manages to play off of those influences and make something really original. They even resisted the urge to CGI the shit out of everything. They used models and real live sets and it was filmed on a very low budget!