Invader Zim is the most overrated show ever. I don't see why everyone constantly says is up their with Family Guy and even The Simpsons. Personally I found it boring and a waste of time.
Avatar is actually a pretty good show and so is W.I.T.C.H. (correct spelling). They both delve into problems you wouldn't think they would considering the standards of thier networks. But I can't see either anymore now that my cable's been cut off. Wah.