I don't know if I have a favorite per se. Seems like I keep finding players out there that simply amaze me with how they play. But, if I had to choose, I think my limited list (for the sake of brevity) would be:

SRV
Brian Setzer
Jimi Hendrix
B.B. King
Albert Collins
Walter Becker
Mark Knopfler
Buddy Guy
Freddie King
Jimmy Page
Blind Willie McTell
Billy Gibbons....etc