Savage(1977)

A PBS documentary shot in the "famous Portland Sports Arena" in the mid 70's. Although the film centers around a feud between the Iron Sheik and Dutch Savage, which culminates in a coal miner's glove match, there are also cameo appearances by other wrestlers such as Jimmy Snuka, Jesse Ventura, etc. Plus it interviews people in the crowd who come to the matches every week, including a few sweet old ladies.