I don't know how much charm this'll hold for UK viewers, but for headbangers who were in high school in the 80s in America, this is a semi-definitive anthropological look at the kids who made up the metal scene then - a near perfect cross section of a high school subculture that will soon be forgotten in the wave of new generations. What makes this brief look at a slice of time from a Judas Priest concert so compelling is what comes after the 15 minute film itself, as we compare it to A) Neil Diamond Parking Lot, B) Harry Potter Parking Lot, C) a revisitation of some of the original characters in the Heavy Metal Parking Lot - interesting to see where they are today!, and finally the biography on the destruction of the Capital Centre in Largo, Maryland, where many many famous concerts were held, now being destroyed to make way for a town center with shops and restaurants. You actually get to see them blow up the old concert centre as if this film weren't already heavy metal enough. Try not to get a little sentimental if you lived through the era which as of now was but a mere 25 years ago. When all the dreams of that time are still only a thought away, it's interesting to make note of the physical changes both in people and geography. The accomplishment of the film-makers here is that they didn't stop with only their amateurly shot parking lot video of 1986, but actually turned it into a fairly substantial documentary, with mainstream TV covering the story and even including a short interview with Rob Halford himself. Pretty good.