Even if you're not actively eavesdropping, you can hear some interesting things. What's the best conversation you've ever overheard?
Either the two nice Jewish princesses I sat beside at Miss Saigon
around Hanukkah who made the comment "Guilt, gelt, either way you go it's a Jewish tradition."
Any number of screamed conversations between Otha (my manager at Cassano's who was/is a die-hard Baptist) and Bill (an autistic driver who happened to be an atheist). There was one occasion when they were wcreaming at each other about green peppers while standing in the back of the store that was very loud. As it happened, I was selling a pizza to a police officer, who looked at me and asked if he'd be coming back later that night.