In some semblence of order, but certainly not precise:
Jimi Hendrix
Jimmy Page
Eric Clapton
Eddie Van Halen
Steve Howe
Stevie Ray Vaughn
Billy Gibbons
Carlos Santana
Duane Allman
Brian May
David Gilmore
Frank Zappa
Angus Young
Tommy Iomi
Joe Walsh
Lindsey Buckingham
Dicky Betts
Stephen Stills
Todd Rundgren
Joe Satriani
The Edge
Pete Townsend
Ritchie Blackmore
Jeff Beck
Mark Knopfler
Keith Richards
Leslie West
Slash
George Harrison
Chuck Berry
Al Di Meola is the best guitarist I've ever heard, but he's not really rock and roll.
Let me know if I left anyone obvious out.
