I haven't really listened to Tool all that much but the one APC album I have (Thirteenth Step) is pretty excellent.

Who are the representatives from the major bands who haven't shown up yet? I'll guess Jerry Cantrell from Alice in Chains, based on the fact that he writes and sings fantastically (not as well as Layne with singing but whatever), and has the humble attitude that Wyl seems to love.

Or Weird Al. I hope it's Weird Al.