Its a toss up between any of today's so-called girl bands/groups, yesterday's grunge bands or that gangsta rap crap.
I think the worst crap is when these groups fail to realise that their time has come and gone and are just too stupid to stop.
Michael Jackson has learned this the hard way recently.
I swear I am starting to really cringe when I hear an Alannis Morrisette song. That whiny, annoying, out of tune catterwallin is enough to make me want to remove the radio from my car.