My passion are ancient/medieval movies (sometimes Greek mythological), and World War II movies. I think World War II movies require immense skill to master because of the coloring. If you ever notice in Saving Private Ryan, whenever a major fight/battle is about to come up, the colors are all dull, and the characters' faces are all pale. It was excellently done.
And another film I admire is Gladiator. It was made soo well.