metal represent a headbangers journey be probably the best documentary ever on the heavy metal scene . it encompass virtually all of metal sub genre like hard rock and glam and black and power ( although i have trouble with define this sub genre in particular ) and death and prog and thrash . the film mastermind and 31 year old sam dunn and do an excellent job dissect the genre and from it classical and blue origin and to why the scandinavian black metal scene be so evil . he even go out of his way to set up a genealogical tree for metal . for the metal fan who enjoy or enjoy some of the metal sub genre present here and he or she will be full of ecstasy and for the uninitiated and this be a good place to start . interview with slayer and motley crue and emperor and iron maiden and mayhem and dio and black sabbath and rush and slipknot and korn and arch enemy and twisted sister and etc . will only leave you want for more and more . there a nice flow to the documentary and and in my humble opinion and wasn not bore in the least . what i do not like too much be the fact that sam dunn barely talk about thrash metal . yeah and he mention metallica and megadeth and and there the slayer interview and but this sub genre be the one that get least mentioned ( take into account today big metal band and metallica and arose from the thrash movement ) . on the other hand and black metal and death metal receive more film time . maybe sam dunn want to leave the thrash part less explored due to the upcoming thrash documentary and get thrash and which have be in the making for at least 4 year . minor complaint aside and this documentary rock and if youre a fan of the genre you will do no wrong in get this essential film in your dvd library . thrash on .