One springs to mind: one of our very first gigs in a small East Texas town was not well promoted. At least, that was our conclusion. After the band loaded in and the curtain opened, we realized there was exactly one paying customer in the audience. We kind of made the best of it playing through the first set, took a break and bought him a Coke and then went on to perform for the remainder of the night. It wasn't exactly a catastrophe but it certainly stands as legendary.