To be more on-topic, I really don't care if TB is only level 81 in WoW. Hell, I don't even play most of the games he post videos about, including WoW. What keeps me watching his videos is because they are entertaining, humorous, and all around informative.
My favorite series of his is definitely the WTF series, and that has nothing to do with WoW. I think a lot of his subscribers will agree, they are a great source of entertainment, and they informed me about some great indie games. A couple of which I've bought and enjoyed, including Magicka.