you know, I think this question will have very different meanings to some age groups.
seems like the older fellas that grew up worshipping guitar players from the 60s/70s/80s will likely have an answer that is very firm.
but some of the guys around my age or young will probably have a 'flavor of the week'
i think it has something to do with how disposable media has become and the fact now a days ANYONE can be a rock star if they don't mind selling their soul. OR doing some ridiculous internet self promoting.
ok, i don't know where that came from....over analysis for the win!
I was tempted to go totally safe and say Hendrix, or Rhoads, but aside from Blackmore influencing me, he influenced a lot of my other influences, as well.