http://www.jeffsromhack.com/products/d2k.htm
I'm not sure how I never heard about this, but it looks like a REALLY nice modification of arcade Donkey Kong adding 4 new stages and a bunch of other stuff.
Anybody know of a way to run this on MAME or the like?
Edit: Just found some video of it in action.
http://www.youtube.com/watch?v=_2gWra51ocU#