I friggin' love the monsters in Terry Gilliam's Time Bandits.
Okay, this is obviously some dude in a cheesy barbarian get-up and a paper mache mask, but this minotaur totally works for me. Maybe it's those hollow eyes, like a minotaur is a man with the head of a dead, decaying bull.
Best ogre this side of the Revenge of the Nerds franchise.
More bovine monsters. These minions of Evil really creeped me out as a kid. Lanky, skeletal things with horns and scythe like single boneclaws where their hands should be, making horrible inhuman noises as they chase Kevin and his larcenous friends about the place. I know the billowy black robes are meant to conceal the poor stiltwalkers underneath, but they also serve to make the creatures look vaguely insubstantial as well. Do these things have a name?