Lemme see:
Chris Squire (bass player for Yes) Pensacola, FL - 1991
Rick Wakeman (keyboard player for Yes) Pensacola, FL - 1991
Alice Cooper (Arizona's own) quite a few times.
Les Paul (the namesake of Gibson's most famous guitar) - 1979
B.B. King (at NAMM) - 1980
Leo Fender (founder of the famous stratocaster and telecaster guitars) - 1982
Greg Lake (of the group Emerson Lake and Palmer) - once in 1997 and interacted with him on his website.
That is all I can think of for now
