I've finished watching the first series of
Avengers: Earth's Mightiest Heroes on DVD and I have to say I was very impressed with the show, I wasn't terribly keen on the animation style at first but that eventually grew on me and I thought that for the most part it was an extremely well written series, I really liked how the major characters all got an introduction episode and origin story that still contributed to an overall story arc that built up to the assembling of the team.
I for one can't wait for season 2.