Oh Boy, so many movies, so little space....
Blade Runner. I think it warrants cult status.
Mullholland Drive I still haven't figured it all out yet, but I'm working on it.
Last Houst on the Left. See it once, if you haven't seen it yet.
The Beyond. Gory italian horror pics don't get much better than this one. They used to show it at the Coolidge corner movie house (Brookline, MA) on Halloween, but that practice stopped some years back.
Ed Wood In Black and white, a good movie about a guy who made bad movies. It's arguable as to whether or not it has Cult status.
Dirty Mary, Crazy Larry. This is what 70's Drive-In flicks are all about. finally released to DVD a few months ago.
Vanishing Point. One of the best chase movies ever.
Caltiki, the Immortal Monster! If you're like me, you love those ultra cheap, black and white 50's monster movies from the 50's and early 60's. This is one of the best. You can get it on DVD from some of the non-mainstream dealers, but the quality varies. I'm investigating to find a decent edition.
Santa Claus Conquers The Martians! Uh, if you think "Plan 9 from Outer space" was the worst movie ever made, you have not seen this.
Black Sunday. Not that movie about a blimp exploding over the superbowl from the 70's, but the italian horror movie from the early 60's that starred the immortal Barbara Steele. The opening scene, involving heavy iron mask being literally nailed onto Barbara's face was deemed to gruesome from american movie goers of that time. This was on DVD, but has mysteriously become scarce.
All I can think of for now.