I name all of mine. So far, all but one have stuck to the theme of major fault lines within California. This also happens to be my field of study, so I've had no shortage of names so far.
I've actually used this naming scheme to help develop recipes a few times, too. There have been times where I've thought about characteristics of different faults, and tried to figure out how to translate that into characteristics of beer. San Andreas is a California Common because it's just the most essentially California, and because the fault was identified after the 1906 earthquake, which hit San Francisco, which is where California Common first developed. And, San Jacinto is a saison with Amarillo and Mandarina hops and white sage, because the fault runs through dry as hell desert and sagebrush and also orange groves.