The pressure point stuff works. I know because I've been taken to the ground with it a few times in Aikido.
The 'touchless' stun gun stuff? Umm, from what I've experienced that looks like BS. You can throw or knock down someone without touching them by leading their mind (kind of like how you can make someone blink by clapping your hands in their face with no touching), but transferring energy through the air? Put me down as an official doubting Thomas.
The other thing is, he says 40% of people are "susceptible" and apparently most of his students are part of that 40%. So what's that say about him as a sensei when the Judo students across the way have the conditioning to redirect the energy?
The National Geographic channel had a show about this. It's kinda like Voodoo in that it only works on people who believe in it. They even suggest that hypnotism might be involved. Check it out.