I can usually gauge the style of viewer I'm typically watching a movie with. I don't normally watch movies to go all MST3K on them, but I'm perfectly capable of doing so when necessary. I'm not the type that just HAS to watch a movie one way or the other. If I feel compelled to say something and don't get a response of any sort then I know that I should stay quiet and let them enjoy the movie in peace. No biggy

My biggest issue is watching movies with people who fall asleep during them. Damn near my entire social group is this way. I don't know a single person who can stay awake during a movie. I've almost gotten to the point where I don't even want to watch a movie anymore. I rarely watch them by myself. I feel like I'm wasting time sitting staring at a box like Clo says. It takes a really rare movie these days to captivate me enough where my mind willingly shuts down and I can just sit, watch, and enjoy. My mind is too active. I usually watch stuff while playing on the computer. Or in a social setting. Which sometimes involves plot-driven conversations or heckling. And often involves the other parties falling asleep...