Most of this blog is my sub side coming out, but I also have a rarely seen dominant side. I listed my ratio as 10/90 Dom/sub for a long time on Recon, but recently bumped it up to 20%. Might be a bit excessive, but it's definitely there lurking under the surface.
I've known Johnny Gear for several years, and there's few guys whose screams can get me as hard as his. The video below is from IML a few years ago - hosted through his site Kinkasaurus - and happens to have captured my sadistic side quite effectively.