The whole Negima! anime adaptations (excluding the Ala Alba ONA).I like the manga very much, which is why I was so disappointed with the anime. My gripes with it was the rather bad graphics,and the equally bad voice acting. Had the producers waited a few years to let the technology catch up and let them adapt the manga into a more visually and aurally satisfying version, more people would have liked it. That and the fact they tried adapting it many times, but still can't nail it down.