there's a thread and video somewhere that shows a Dim Mak practitioner against your standard karate guy. The Chi man has wagered his MA school (yes, he bet his school!) that he can use Chi to defeat any opponent. And the karate guy clobbers him. It's quite sad to watch. But funny at the same time... Wish I could find where the vid is, perhaps search youtube for Chi or something.

apparently it was a "kiai" master with "no-touch" knockout and he bet $5000. But who knows, the story changes with each posting: