Some more info: http://sciencechatforum.com/viewtopic.php?nomobile=1&f=77&t=...
I believe he has a couple of patents on the technology, but not sure he'll ever get around to making something practical with it.
I watched multiple of the videos he has listed and from what I can tell the phenomenon he is demonstrating is real and reproducible.
Whether or not he's crazy, who's to say?
In this case, besides the appearances, what the guy is demonstrating in the videos seems legit.
Here's an earlier video where he explains what he believes is the effect at work, with a simple demonstration: https://youtu.be/I3g0CcLzC6I
It would be awesome if a youtuber like Steve Mould or Dustin from SmarterEveryDay did a video on this.
Most of our current propulsion and lift mechanisms are based on momentum transfer, which has many problems in air. His work makes me think there are a lot more efficient mechanisms to be discovered.