One of my favorites.
http://www.imdb.com/title/tt0089153/
Not exactly dark fantasy, but action-adventure except set in the 1500s. High-tech weaponry such as barrels filled with gunpowder in a roller harness with a
very long fuse and a war machine designed to scale castle walls. Loads of flesh, loads of blood, loads of medieval philosophy and loads of fun.
You can read the main cast in the trailer, but it also has Bruno Kirby and Nancy Cartwright (Bart Simpson). Much fun.