This a relatively epic dubstep remix of Rolling in the Deep by Adele. There are tons of remixes of this track on soundcloud, some good some not so much. This one is an aural adventure to say the least.
[soundcloud url="http://api.soundcloud.com/tracks/26717945"]
I have found some great remixes on Soundcloud so far, I will need to spend an evening going back though my favorites and share them.