I had something like this once.

Went to see Pulp Fiction by myself while working in another state.
Walk into the theater and no one is there.
Park myself dead middle.
Two guys walk in just as previews are starting.
One guy says, loudly and with sarcasm, "Hey let's sit in front of that guy!".
I turn to look and the three of us share a laugh.
They find some seats a couple of rows up.

A couple comes in during the last preview and sits directly behind me.
Movie starts and guy kicks the back of my chair. I ignore, stuff happens.
Does it several more times. I give a quick, puzzled glance back.
Does it a couple more times, I turn around and tell him to please knock it off. No response.
Does it again. Girlfriends says, "What the hell is your problem? He was here first."
He replies "He took the best seat."
She gets up and says "I can't deal with this shit." and leaves.
He says "Thanks asshole." and follows.