heavy metal (1979–1983) Motörhead; Saxon; Iron Maiden; Angel Witch; Girlschool; Tygers of Pan Tang; Diamond Head Progressive Metal (1970–present) Uriah Heep; Rush; Queensrÿche; Savatage; Fates Warning; Voivod; Dream Theater; Meshuggah; Symphony X; Evergrey Glam Metal (1973–1990) Slade; Sweet; Hanoi Rocks; Mötley Crüe; Twisted Sister; Poison; Cinderella; Skid Row Pop Metal (1978–present) Quiet Riot; Van Halen; Whitesnake; Def Leppard; Europe; Dokken; Lita Ford; Ratt; Guns N' Roses; Winger; Warrant; Doro; The Darkness Doom Metal (1982–present) Witchfinder General; Trouble; Candlemass; Cathedral; Kyuss; Today Is The Day Original Hardcore (1980–1986) Agnostic Front; D.O.A.; The Exploited; Bad Brains; Misfits; GBH; Discharge; Dead Kennedys; Minor Threat; Black Flag Thrash Metal (1983–present) Metallica; Slayer; Anthrax; Megadeth; Exodus; Overkill; Kreator; Destruction; Sodom; Testament; Nuclear Assault; Death Angel; Pantera; Sepultura; Children of Bodom First wave of black metal (1981–1986) Venom; Bathory; Mercyful Fate; Celtic Frost Norwegian black metal (1990–present) Mayhem; Darkthrone; Immortal; Gorgoroth; Emperor; Satyricon; Enslaved; Dimmu Borgir; Cradle of Filth Grindcore (1987–present) Napalm Death; Carcass; Repulsion; Exhumed; Extreme Noise Terror; Cephalic Carnage; Brutal Truth Death Metal (1985–present) Possessed; Death; Morbid Angel; Obituary; Deicide; Cannibal Corpse; Immolation; Autopsy; Nile; Dying Fetus Swedish Death Metal (1990–present) Grave; Entombed; At the Gates; Unleashed; Dismember; Arch Enemy; Soilwork; In Flames; Dark Tranquillity; The Haunted Goth Metal (aka Doom Metal on the DVD) (1990–present) Paradise Lost; Tiamat; Therion; Type O Negative; My Dying Bride; Anathema; Theatre of Tragedy; Katatonia; Opeth Metalcore (1985–present) Corrosion of Conformity; Suicidal Tendencies; Dirty Rotten Imbeciles; Machine Head; Stormtroopers of Death; Hatebreed; The Dillinger Escape Plan Grunge (1988–1994) Green River; The Melvins; Soundgarden; Mudhoney; Nirvana; Alice in Chains; Mother Love Bone; Stone Temple Pilots; Pearl Jam Industrial Metal (1988–present) Ministry; White Zombie; Godflesh; Nine Inch Nails; Fear Factory; Marilyn Manson; Static-X Hard Alternative (1985–present) Faith No More; Jane's Addiction; Prong; Living Colour; The Smashing Pumpkins; Rage Against the Machine; Tool Nu Metal (1994–2003) Biohazard; KoЯn; Limp Bizkit; Slipknot; Godsmack; Coal Chamber; System of a Down; Disturbed; Kittie New wave of American metal (2000–present) Shadows Fall; Lamb of God; Darkest Hour; Chimaira; Killswitch Engage; Unearth; God Forbid Timeline Reception The film received mostly positive reviews. It currently holds a 90% approval rating on Rotten Tomatoes, with an average rating of 6.9/10 and the critical consensus being: "Made by a metalhead, this documentary of the musical genre both informs and entertains with its range of interviewees." Criticism Some brief controversy arose over the film's depiction of black metal, which many