A few years ago I went to see a showing of Goldfinger in an arthouse cinema in Glasgow. The Glasgow Film Theatre.
When Sean Connery takes off the wetsuit to reveal his tux. A guy shot out his seat, started clapping really slowly and shouting 'OH YES'. I nearly pissed my pants.
To be fair it's an iconic scene though.
Have also seen fights break out and people pissing in the back row. You wonder why you go sometimes.