The question is simple: What is your most memorable theater experience? Most memorable in term of the movie itself, sound&audio, audience participation or the whole thing.

Although not much of theater goer myself, but must say the best experience I had in theater was when went to see the first Star Wars movie which was re-released back into theaters in 1997. Seeing that movie for first time on big screen was a big thrill, but watching audience cheering thru the whole movie made it more memorable.