My general ringtone is the Kill Bill Whistle for now. Here are a couple others:
Mom--"Sweet Home Alabama" (Lynyrd Skynyrd)
Dad--"Wish You Were Here" (Pink Floyd)
Sis--"Sweet Child O' Mine" (Guns N Roses)
BIL--"Alabama Fight Song"
Best Friend--"Don't Stop Believin'" (Journey)
BF--"All I Wanna Do" (Sugarland)
Disneyland Railroad is my voicemail alert and Louis Armstrong "When You Wish Upon a Star" is my text alert.
I tend to change mine a lot because any song that's on the mp3 player can be set as a ringtone. I change the radio stations in my car constantly, too.