Have to second the Michael Hedges vote. I saw him twice in small settings and the guy was incredible. His untimely death was so unfortunate. Here are some others...
Tony Levin
Buckethead
Joe Satriani
Robin Trower
Robert Fripp (a second vote)
Dickey Betts
Warren Haynes
Ken Bonfield (Who? Look him up.)
Anthony Phillips
Tony Levin
Buckethead
Joe Satriani
Robin Trower
Robert Fripp (a second vote)
Dickey Betts
Warren Haynes
Ken Bonfield (Who? Look him up.)
Anthony Phillips