No videos, but here's a photo of me sparring with a Kickboxer/MMA fighter...

I'm on the left; This shot was taken at the exact moment when I dodged his left hook and threw a wrist-strike into his groin. That ended the fight _real_ quick. You can see the way he steps in with just _no_ regard to defending/protecting his groin too. Might as well paint a massive target on the crotch.
Btw Bartrim, I clicked on that last video (Secrets of Scams). Pretty cool/informative stuff.

That middle video looks interesting too -- haven't checked that out yet.