I use the default Samsung ring tone only because my phone is locked and I can't use mp3 ring tones :(
lol...yea...of course! otherwise i'll be getting bored of it... but recently getting into DDR tracks....gives me bit of boost when i hear 'em.. makes me wanna dance -woot2
Mine is Chris Brown - Forever. I used to use those Canto dudes saying "answer your phone now, please! in chinese with the funny phrases and whatnot, but my non chinese speaking friends got annoyed with me, so I went back to something more conventional.