I don't find his stuff as entertaining as the yogcast that said he seems like a decent guy, from his videos anyway.
The fact that he became so popular on youtube so late to join the game is impressive but he is the most subscribed single gaming commentator but in the UK on youtube I would wager the yogscast and TB are more succesful and both of those groups do more games than he does.
That I agree with, it seems like a nice thing to make money from youtube, playing games for a living.