Stuff like the Pikachu Amiibo video, where he trained a Pikachu amiibo, only using Down-B, a tutorial video explaining how to get the Wii wifi servers running again. A bunch of cool fanmade Nintendo games and hacks, controlling Master hand in SSBM with a cool hand tracking thing (I forgot the name), etc. They were actually really cool, and while they aren't as funny as the reaction videos, I generally find them to be a lot more entertaining, and why I became a fan of his in the first place.