K-1 is essentially all they show here in Sweden (I recently caught a HERO'S event on viasat sport which was hilarious as the Swedish commentators don't know shit and sound like wrasslin commentators) and I've been trying to get into the stand-up version of it. It varies between being really good and really boring :\
HERO'S however is really fun to watch (hey, it's MMA and it's free!).
Favourite fighter would be Bukaw for obvious reasons!