Usually i eat popcorn if i am watching the movie in the Theatre. If i watch the movie in the home then i would eat what it is available in the home.
I see mostly films in theater with my close friends. whatever it is i like to eat while watching film like popcorn , ice cream , puffs , samosa etc my friends buy for me and give me freely means..... lol
When I'm watching a good movie, I eat nothing and pay 100% attention to the movie. When I'm watching a bad movie, I eat tortilla chips.