PENITENTIARY (1978) - Rubbish Blaxploitation, though with a good opening visual. The sequel has Mr. T.
The Cheerleaders (1973) - Grotty, cheerful but eventually boring sexploitation. The sequel has David Hasselhoff, and is otherwise shite.
Midnight (1982) - John Russo, the other bloke behind Night of the Living Dead's $71,000 bargain-bum witchcraft-orientated slasher. Unmemorable, bar the bizarrely out-of-place pop-folk theme.
Maniac Cop (1988) - With a great cast, Tom Atkins, Richard "Shaft" Roundtree, Bruce Campbell,
etc, and Robert Z'Dar as the memorable killer, Officer Cordell, snappy Larry Cohen script, an interesting St. Patrick's Day New York climax, and a sense of glossy sleaze brought by director Bill "Maniac" Lustig, this is recommended.
McBain (1991) - Christopher Walken leading a band of Vietnam vets to fight a drug war in South America by James "The Exterminator" Glickenhaus. It is subversive, has Walken as an unusual action lead, some nice shots of the Philippines and is essentially an action movie parody.
Straw Dogs (1971) - Susan George, Dustin Hoffman, Peter Vaughan, David Warner, Sally Thomsett, et all are all bloodily adrift in Sam Peckinpah's controversial but drifting and badly concluded Mummersetsploitation (or Bumpkinsploitation or Westcountrysploitation)