Deicide looked extremely impressive in person - pretty tall. The blonde guitarist had the thickest forearms I've ever seen on a non juiced person. Deviant fuckers.
I doubt he was non-juiced but with his height he looked like a giant on stage. Glen Benton said Eric got busted for steroids but then Benton hates the Hoffmans almost as much as he hates the christians.
Jon Vesano had the most impressive forearms (juice or not), since he isn't tall he looked like a beast, seen him live a couple of times.
Chris Broderick is not too shabby for a guitarist:
and John Petrucci:
with Ronnie (yeah buddy):