i too have recently begun to make my own ringtones. i think the variety and control apeal to me... and garageband, naturally. so far, i've created only one original GB tone, but i also carry:
oingo boingo (weird science)
primus (those damned blue collar tweekers)
portishead (strangers)
some classical (handel and saint-saëns)
and and a smattering of tv theme songs (mostly cartoon)
louis armstrong's "what a wonderful world" is my alarm tone and i really like it.
i haven't even (haha) started on the holiday music!
ETA: i frequently rotate my ring tones. i'm currently using the primus one.