There are many, many excellent guitarists out there. This is an extremely touchy subject, but here goes.

1. Eddie van Halen
2. Jimmy Page
3. B.B. King
4. Kirk Hammett
5. Joe Satriani
6. Eric Clapton
7. Stevie Ray Vaughn
8. Jimi Hendrix
9. Slash (I loved his work on Slash's Snakepit - It's Five-o-clock somewhere!)
10. James Taylor