Omg, i just discovered the Dubstep Thread!
Here are some of my favs:
I love Koven!
And Koven + Modestep is just epic
Aaaaand of course, don´t forget Zomboy (in my opinion way better than Skrillex):
Well, there are too many good Dubstep Songs out there, would go beyond the scope to post all of the songs I love...