House of Flying Daggers (by far my favorite)
Crouching Tiger Hidden Dragon
Raise the Red Lantern
The Way of the Dragon
The Wedding Banquet
That should get you started at least. Most good old Chinese films are in Cantonese due to Hong Kong having control over the industry longer than China itself has.
But good luck with Mandarin. Its a very difficult and frustrating language to learn, and it takes many years to become fluent. Even I can't say that I've reached complete fluency yet, and I've been studying this language for almost 4 years now. Just be patient with it, since it will pay off in spades if you keep at it.
This post was edited on 11/7 at 9:23 pm