Werdum is a grappler's grappler, if that makes any sense. He's a Mundial and ADCC champion. What more can you say?
We're just learning about these highlight video making magicians known (but not by us until recently) as dogged.tv. They've created some really great looking and thought provoking MMA-related video. Check it out. You'll be inspired to hit the dojo hard later. I'm sure your sensei will be proud of you.