One of the most interesting, versatile, talented guitarrists out there. Pioneered the use of effects in the jazz guitar world. Redefined fusion, is a compositional wizard, and on top of it all a great melodic improviser.
Django Reinhardt-
One of the most beautifully melodic soloists I've ever heard on guitar. His phrases are just so strong, and they make so much sense musically. The music just flowed out of him, and all of this with two fingers.
Joe Pass-
My favorite solo guitar player. He was a wellspring of musical ability. He could make so much happen with walking bass and chords, weaving in melodies with his chord lines, he was a band in a man.
Joe Satriani-
In the world of shred it's rare (in my mind) to find a player who plays with a lot of melodic sensibility and is able to tastefully use his technique. To me, Satriani is one "shred" player who plays music, not the guitar. I just love his tunes.
John Williams-
A classical player with great technique, but also a very open mind. He's willing to experiment with new sounds, and he makes everything he plays his own. He explores the tonal possibilities offered by the guitar, and makes beautiful music with it.