Not bad, Mike. Here we go, on all 20:
1st Post:
Billy Gibbons (ZZ Top), The Man Himself, Les Paul, Slash (Guns n Roses), Ace Frehley (Kiss), Gary Richrath (REO Speedwagon), Gary Moore (Thin Lizzy & solo career), Jimmy Page (Led Zepplin), Pete Townsend (The Who), Randy Rhodes (Ozzy) & Pete again, about to do the unthinkable!
2nd Post:
Sir Paul McCartney (Don't think I need to list his bands
), Doug Aldrich (Whitesnake), Duane Allman (Allman Brothers Band), Peter Frampton (from his solo time), Mark Knopfler (Dire Straits), Joe Perry (Aerosmith), Joe Walsh (Eagles, James Gang, solo), Neal Schon (Santana, Journey, Abraxxis Pool), Neil Young (CSNY, Crazy Horse, solo), Zakk Wilde (Ozzy, Black Label Society)