This isn't the greatest movie in the world, but its worth sitting through just for this duel. The guitarist playing for the devil is Steve Vai. He is the guy that David Lee Roth recruited for his band after he left Van Halen.
I love the band Van Halen, but as far as technical ability David Lee Roth's band kicked butt over Van Halen. But that being said when it comes to $$$ Eddie Van Halen's brown sound seems to clean up.