The castle movie that I watch over and over more than any other is Ladyhawke. Good story, good acting, great lines from Matthew Broderick as Phillipe the Mouse ("I know I promised, Lord... but I also know that you know what a weak-willed person I am.") and Rutger Hauer (so stoic throughout the movie that when he feels sorrow at their plight you feel it too), and probably the first crush that I had was Michelle Pfeiffer as Isabeau (I was 12, OK?). Not to mention that the Bishop of Aquila meets one of the most satisfying ends of any movie villain!
I could probably quote most of Conan the Barbarian from memory. One of my favorites--I like cheesy movies when everyone in the movie knows it's cheesy and does their best to help that along!
"You read the manual, man, and you won't play around with it, not the same way. And you get all funny when somebody else uses it to do something you never thought of..."
The Winter Market