Tell me about it Mike! I've been going back to my list all day. Some bands are great, just because they make good music and nothing else. They are popular because the music IS good and to some, that is all that matters. Who cares it they contributed to others, they just please the internal pallet.
In any case, I'm almost done. Oh, and for what's it worth... I'm having a hard time voting for those I'm not familiar with, even if they did contribute to several others, because to me, I can't consider them groundbreaking if I've never even heard of them. KWIM?