I have to jump in here, because my favorite
guitarist has yet to be mentioned...
1. Bill Frisell!
If you haven't listened to "Nashville,"
"Good Dog, Happy Man," "Have a Little
Faith," "Bill Frisell Quartet," and
"Gone, Just Like a Train," you're missing
out. Melodic, emotional roots-jazz.
2. Ry Cooder
3. Joni Mitchell
4. Jeff Beck/Jimmy Page (tie)
5. Pat Metheny
And check out this article from the Joni
Mitchell Discussion list that takes on
the whole "greatest guitarist" debate in
depth.
http://www.jmdl.com/articles/docs/980521sdu.cfm
-- Andy.