I find Slash a bit over rated. GnR are pretty great though!!
Josh Homme has become quite a guitar god for me, his views on playing guitar really interest me. Apparently. when he learns or comes up with a riff he always plays it backwards. Thats a pretty interesting perspective. He also says theres too much soloing, he says "just jerk off before a show, maybe thee will be less solos". He doesn't deserve being on the list though. (even though his work is much more interesting than some of the artists here {in my opinion, of course your will be different]