i be drag along to a film festival to see this by a mate after he convince me base solely on a picture of a fat metalhead play an inflatable pink guitar at an unnamed concert . thus i be expect something pretty cheesy and maybe a bit of fun . what a surprise metal represent a headbangers journey turn out to be . the guy who make it and sam dunn be a anthropologist and metalhead who treat his subject both seriously and with a bit of humour and his love for what he be describe and as well a obviously deep knowledge of the subject and go a long way to make metal represent ahj so worthwhile . it have an excellent global rather than u or british focus and cover everything from the root of metal to all it various past and present incarnation with almost all of the information come from either band member themselves and fan or interested third party from various academic background . the documentary be divide into sub section such a root and controversy and gender and satanism and hold together by follow of our documentarian sam a he conduct various interview and visit festival and country like a tour band himself . perhaps the most interesting part be the section on black metal and with interview with both norwegian church burner and advocate balance against the minister of one of say burnt church without go the easy road into provocation and angry sniping . every metalhead i know who saw this love it ( although equally everyone have some minor disagreement with the metal family tree dunn present ) but equally everyone who i make watch it with me who be not into metal come away surprise at how interesting and enjoyable it be . best moment represent ghaal from gorgoroth answer to what be black metal . ( so dead serious but all the more hysterically funny for it ) . complaint . simply too short and even with all the extra on the second disk ( many of which be excellent just a stand alone piece lemmy be a highlight here too . ) on dvd .