Since we've all turned into acting coaches on this thread, I'll throw in my bit as well.
When we use the karate-chop gesture for emphasis, we always break eye contact just before we make it and resume it as we complete the gesture. (Specifically, we look left, or close our eyes.)
Go ahead, try it. If you maintain eye contact as you make this gesture, the listener will flinch.
In the Quicktime, he does look left just before the gesture, but he resumes eye contact as he begins the chop. It's a fraction of a second too soon.
I realize he's speaking to an audience here, but the principle is the same.
Other than that, it's it's gold. I'd vote for him.