They Paved Paradise and Put Up a Heavy-Metal Parking Lot
Back in 1986, public-access documentarian, Jeff Krulik interviewed the beer-swilling, acid-dropping throngs of metalheads hanging out in the parking lot outside the Capitol Center in Maryland, waiting for a Judas Priest concert to begin. The often pathetic, often hilarious result was Heavy Metal Parking Lot [Link: Quicktime]
And as you can see here in their other docs, Neil Diamond Parking Lot [Link] and Harry Potter Parking Lot [Link], they weren't averse to taking aim at the soft, white underbelly of MOR and English Boy Wizard fans either.