Can anyone give me some recommendations for some heavy Dubstep artists?...

Was down at The Social on Friday night, and the DJ was playing some cool stuff there. Couple of tunes kinda started out quite fast Techno/D&B-ish for about 20 seconds, then dropped to the heavy dubstep beat.

Have no idea what it was, but want to find it or something like it. Any suggestions would be great. Thanks!!!!