Hmm... Its hard to say, the rock gods are so plentiful: Joe Satriani, Jerry Garcia, Adam Jones etc. I just dont know who I would choose.
ahhhhh too hard to decide!!!!!! pressure!!!!! i would have added jimmy page to the list as well. but wow this is so hard.
john fogerty, brian may, tommy ionni, george harrison (crazy sitar), of course jimmy page, david gilmour, van halen, pete townshend, jimi hendrix, etc... i could go on forever... but i dont have forever physically
Hendrix' work contained unmatched awesomeness, HOWEVER the little-known truth is that Frank Zappa was the unexcelled guitar master - though the term "guitar god" is so limiting, and the term "grand guitar wazoo" much more appropriate.