This is entirely based on the enjoyment value I personally got when watching the animes' on this list. For the most part it's connected to the overall quality (Story, Audio, Animation, Characters)...
Since I don't want to mark series and movies as watched x2, x3 or even x10, I made this list of things that I found entertaining enough as to watch again. This doesn't mean they are my favorites.
All watched series, OVA's, movies and so on.
All the shorts, short series I watched.