Extr@ Auf Deutsch

For my German speaking friends, what do you think of Extr@ Auf Deutsch? Have you ever heard of it? I came across it while downloading practice materials and ended up downloading all 13 episodes. It's a "sitcom" created specifically for students learning German and targets a 13-16 year old audience. I must be young at heart, because I think it's pretty funny plus I understand 95% of it. I've think it's a great learning tool too. I watched the first 7 episodes or so then decided to start over one by one and study every word that I didn't understand. It seems to be really effective so far! Aufwiedertippen. Yea, I just made that one up.