Thanks to the handy Infra Red USB link I bought some months ago, I can create and upload my own ringtones and wallpaper for our three Nokia's.
Charlie's has the Crazy Frog for both. Immersion therapy - Hopefully it'll be too embarrassing to keep after it's gone off a few times in public.
I have a closeup of dew on a leaf and vary my ringtone between "The Goodies" theme tune and birdsong, which gets annoying at dusk as I keep thinking the blackbirds in the garden are ringing me. The SMS tone is a sneeze and never fails to turn heads.
My business phone has what looks like black crumpled paper and Bob Marley's "Jammin" for a ringtone.
So what's on your phone?