Watching him jump around with that laser made me cringe!Oh gosh, so many things going wrong there.
The sunglasses are a big fail obviously, and they actually look like ordinary sunglasses, not laser protective eyewear that they just call sunglasses for the show.
With a laser outputting a couple of watts a beam stop and not waving it around in your hands close to other people might also be a pretty good idea.
These can set stuff on fire - not only matches, but also someones clothes, the drapes, etc. I have a nice burn hole in my wallpaper reminding me to use beamstops. And this was wallpaper painted over with white latex paint a few times too, so pretty high albedo. After meddling with the power pot on a labby i wondered where the smoke was coming from (i didn't really see much because my goggles block out the laser wavelength so the dot on the wall did not appear bright). I actually thought i'd fried something in the circuit at first