K1 is exciting. Cung Le is the man to beat.
However, if you want to see even more exciting fights watch Pride or UFC. These guys are serious athletes trained in numerous styles of martial arts, hence called mixed martial arts fighting. These fighters are unreal. In Pride, guys like Fedor, Mirko Filipovic, and Wanderlei Silva, just to name a few, are unbelievably gifted as athletes and fighters.
I have a friend who does MMA and I like to wrestle with him sometimes and he punishes me.
A few pics for you:
Ready for a world of hurt- http://www.pridefc.com/cgi-bin/pic_p...hido3/23_l.jpg