Marco Ruas.
The man was a beast in his prime. A shame he was over the hill when Pride and Vale Tudo got really big.
Highlight reel (has some pieces of that fight against Taktarov in WVTC II):
Ruas had both Muay Thai and BJJ background, check the brutal Thai low kick ownage @ 2:39
Here's the a bigger clip of that fight, great low kicks:
-Hedge
