In the '80's we had Heavy Metal {Judas Priest, Iron Maiden, Ozzy Osbourne}, Glam Metal {Motley Crue, Poison, Ratt}, Speed Metal {Metallica, Megadeth, Motorhead}, and Death Metal {Slayer, Death Angel, SamHain}. Three examples of each. That's IT! THERE WAS NO HAIR METAL! This was a term that did not exist in the '80's, 90's or even 2000, it was coined by someone that wasn't born yet!! It was called GLAM METAL!!! This documentary is the same - done by people who were not born at the time and do not know what they are talking about. Go find interviews from the bands themselves that were filmed from 1980 - 1989. That is the only way you are ever going to get an accurate telling of the '80's Metal Bands, because even The Decline of Western Civilization Part II: The Metal Years from 1988 doesn't do that time frame and the bands justice. Today's interviews from band members that don't exactly remember due to excesses is NOT the same as what they said AT THE TIME. BTW, the Seattle scene bands were not known to the world in 1989,even G -n - R didn't break world until 1990. The '90's are nott the '80's!