Glam metal pretty much is bubblegum, IMO. Poison, Danger Danger, Pretty Boy Floyd etc all the really poppy and puffy, girlish bands that aren't even really metal bands in my view. On the other hand Twisted Sister had some good heavy metal albums ( Under the Blade,You Can't Stop Rock 'n' Roll, Stay Hungry) before they went commercial ( granted Stay Hungry had some big hits on it ) and they were more of a shock rock band then Glam,IMO. Crue, Ratt, Dokken, WASP and others dressed Glammy but were not really super wimpy musically so I never saw them as Glam "Metal" like most of that scene.
And G'N'R' Glam metal !?!?!? That's just stupid.
And I'm sure we will get hammered to death about Metallica, as per usual. It would be nice to see others that usually don't, get their due. OVERKILL ....one the very first thrash bands EVER and one of the best. I'm sure Dunn will touch on the German scene ( it's pretty much a must).
I think Grunge is gonna be covered as a metal off shoot as it was part of Dunn's metal family tree .