Microwave Massacre starring the late great Jackie Vernon. Boobies, cannibalism and a terrible script, what more could you want?
Dave makes a truly compelling argument! But.....
B movie: Probably
Used Cars....so here's a different clip..the "empty the junkyard to make a mile of cars" scene...
C movie: I think I'd pick
The Raven, a 1963 movie with Vincent Price and Peter Lorre, and a very young Jack Nicholson! Amazon.com synopsis: A magician who has been turned into a raven turns to a former sorcerer for help in this film loosely based on the Edgar Allen Poe poem. It's actually a Roger Corman-directed tongue-in-cheek take-off of the poem.
Although there's another old B movie I really liked -
The Five Man Army, a 1969 western in which Peter Graves led a "Mission Impossible" -type force in Mexico.
Damn, I'm getting old.