As ugly as this thing is, as it says in the title the humour is largely dependent on your speaking German. Eg at one point he states that "The finished product looks easy to build, but I'm sure you can't do it as well as I did" and "the gamepads [sic] look pretty swell by now and are possibly the best on the market". You have to trust me when I say that the humour is largely lost in translation... he just sounds so sincere. Bonus points for the drawer underneath the cp and the ladies in random tartan garments.
As for the rest, I agree that if he had added at least some artwork it might have turned out decent.