Chronicle - Great Act of Valor - Meh/Mediocre Project X - Great, if you're into that sort of thing Also, I've seen The Dark Knight Rises trailer at every single one of these, and every single time I was able to get the entire theater to clap and cheer after the trailer. Best part was when some guy clapped after the trailer following TDKR and everyone boo'd him while one guy shouted "That's not ****ing Batman!"
whenever you're in a crowded movie theater, during the movie, whenever the character does something and then theres a quiet pause, say "HHHYEP, THATS MAH DAD"
I remember at the end of the first Spider-man movie, when Peter and MJ are in the cemetery and have their "moment", after Peter walked away I said half to myself, half to anyone who was listening, "I think Spider-man's gay(!)", and managed to get the entire theater laughing.