I do get a kick when cell phones ring in public and the ringtone in no way matches the public image of the person. Gives you a brief view into their inner sanctum.

Funniest I ever saw was a burly dude in Harbor Freight, whose phone rang with a bubblegum song that somebody said was Britney Spears. Dude couldn't get it open fast enough. Yeah, we all backed away from that one.