Personally, The Rocky Horror Picture Show.
I knew it was going to be quite the experience before I went for the first time‡ but it was so much fun I had to keep going back bringing friends each time.
It’s still a fun tradition to do though we haven’t done it since last year, we’re probably going to try and go again in a few weeks.
‡ I had seen it many times before going to see it in theaters for the first time.
Same here. But even after rewatching it so many times, I never realized that the iconic Inception BWAAAH is actually a super-slowed down version of the dream world cue song (Edith Piaf’s Non, je ne regrette rien). There’s a really neat analysis done by Rutgers’ Christopher Doll, which explains how Zimmer uses the slowed down motif to signal which dreamscape we are in as the viewer while watching the movie. Link here.