1) One who has mastered pentatonic scales and can blow your mind with them.
2) Metallica's Lead Guitarist that has composed some pretty amazing solos to date. Things that make him happy include pentatonic scales and wah wah pedals. And don't forget his stuffed two headed sheep and his thrash metal!
Man... That Kirk Hammett is blowing my mind. I wish he would stop using those Em Pentatonic scales/