Well, I am really tired of these "funny" videos shown everywhere BUT this makes sense because they tell why these odd things happen. So they teach people in a good manner to really understand why not to do something stupid. This also teaches you how to do it right, if you really want to learn something.
Moreover I’m sure that masses of people, who are not interested in science, are watching this because of the host and even if they do not follow every scientific nuance, they unconsciously receive important information which you need to survive well. And when there is the one and only Richard Hammond, people do watch this.