That hasn't happened. But I listened to a guy talk about his damn coin collection to another passenger across the aisle for a good hour once. That was annoying. Why would some stranger care about your coins? I was stuck in the middle of a travelling knitting club or something once. Those ladies were sweet but never shut up. The soccer team that was coming back from vegas and were drunk as skunks were fun. It was the middle of the night and they were as giggly as school girls. And kept making drunken tripping trips to the bathroom. The business guy that sat next to me and typed a novel was great too. He would click click click on his laptop and then giggle to himself or sigh dramatically. I just don't have good flights I guess.