1.) My number one is noisy people in cinemas. I despise it. I'm there to watch a movie, not babble on about a movie you saw three weeks ago starring some unknown motherfucker I don't care about. No, do not make your girlfriend giggle. If you have a bag of candy, hold it in your fucking hand. Do not constantly rustle the back like you have the hands of Michael J. Fox. Do NOT comment on the movie. I don't care if you love Denzel. I don't care if you "think this guy is going to die" and I don't understand why the fuck you have to announce if something is funny. Just laugh like everyone else. That shows your appreciation for comedy. Screaming "Oh shit, that's funny!" makes you look like a retarded child.
Thats why when I go to the movies I try to go early when there arent that many people there so I can enjoy in silence without hearing extra commentary. I also hate when people laugh to hard at something that wasnt that funny. Get a little chuckle in and STFU.