311: California Penal Code
311 is the name of a band I like, and if the story I was told is correct (I think it's funny so I believe it), it's named 311 because that's the California penal code for streaking, which the frontman of the band was arrested for at least once while they were starting out.
My favorite (and probably the most famous of) their songs is Amber, but their song I'll be here awhile also plays in my head quite frequently, when I'll be places a while.