I haven't seen a lot... I'll be netflixing some of these ^^ to be sure... but of the ones I've seen in the past year, Iron Monkey is just wonderful. I watch it over and over, my kids like it too.
I saw Enter the Dragon when it first came out, I was in third grade at the time. Loved it, and loved having a brother 10 years older than me that would tell my mom we were going to see a Disney flick or something, then take me to see The Eiger Sanction or Blazing Saddles... heh heh.. anyway, I digress... I don't know if it's really considered a martial arts flick, but I also really enjoyed A Chinese Ghost Story, just lovely, and funny too.