Not really a "worst" experience in the strictest sense of the word, but I saw
Quantum Of Solace this past weekend with my brother's wife (a fellow 007 fan who loved
Casino Royale), and what does she do? She sits there, dutifully watching all the trailers (which, of course, ran for 15-20 minutes), then gets up to use the restroom
just as the film was about to start. By the time she got back to her seat, she had quite literally missed the
entire opening car chase!

She also ran out
again and missed a good 5-minute chunk of the movie right in the middle somewhere.
I realize this isn't on the same level as cell phone abusers and crying babies, but I'm
always distracted when someone gets out of their seat and leaves the theater during the film, and particularly if it's the person you came with! In some weird way, it negatively affects my experience knowing the person you came with is missing some of the movie, and that'll you'll have to whisper an explanation of what he/she missed when they get back. I realize some people aren't as fanatically dedicated to The Theater Experience as I am and neglect to take pre-show measures to avoid a mid-movie bathroom run (I never, EVER eat or drink ANYTHING the morning of the day I'm planning to see a movie, especially if the film runs over 2 hours), but it still aggrivates me. So then I had to explain what scene(s) she missed (including the
Goldfinger homage). Grrrrr.

Oh well, at least she didn't force me to exit the theater the second the film's end credits started up (
always annoying...dude, you've been sitting in the dark for two hours, will another six or seven minutes
really kill you?).