I saw it when I was very young, so it educated me to the state of American punk very early on. Though, when I saw it, Rollins had just become notable as Black Flag's current singer, so it confused me a little when he wasn't in it.
It's depressing because it's 1980 and these kinda guys knew what was really going on. "Metal Years" is depressing in a different way, and most of the bands are contemptible and clueless.
"Metal Years" is really easy to find in video stores, but the original is more obscure.