During the summer I'll go as often as once a week or even more. If it's a major release I'm probably going to go. Right now I'm in the middle of a 4-week streak: Godzilla, DoFP, A Million Ways to Die in the West/Maleficent, Edge of Tomorrow.
There's a theater chain here that absolutely forbids talking or using your cell during a movie, and they will kick you out for doing it. I love going there because assholes can't ruin your night. But I realize that makes me more likely to go see a movie than most people.