First off, for those not in the know: http://tvtropes.org/pmwiki/pmwiki.php/Main/TheAbridgedSeries
I’ve seen two types of abridged series. The first takes source material that is honestly mediocre, replaces the dialogue with jokes and scatological references and transmutes the original into comedy. The second takes pretty good source material, pokes fun at it and then spins it into something new and different. I’ve watched some pretty good series in the first category (Yu Gi Oh the Abridged Series, mostly) and some other good ones in the second category (Princess Tutu Abridged) but generally this kind of thing is lost on me. If the jokes fail, than the first category can be almost unwatchable; and even when the second category shows a lot of effort on the part of the editors and writers, why watch it when you can just watch the source material instead?
So it isn’t often that I come across an “abridged series” that not only takes famous but problematic source material and makes it absolutely hilarious, but also distills the material itself until it becomes arguably better than the original–and in all the same ways that the original was great in the first place. It’s Shadowjack’s In Which I Watch Sailor Moon, people. Read it and weep!
(Note: it’s not actually an abridged series. More like an abridged series script. But still–consistently awesome stuff.)