Those that wish to use this list as an anime recommendation do so without worries. This is basicaly my encyclopaedia of anime series, movies and OVA series that I enjoyed throughout my 10 years of relentless anime viewing.
Now to clear up some misunderstanding:
1. I consider the 8 Kara no Kyoukai movies as a movie series. Even though I placed them in a preferential order, all the movies you can consider them as a series. In other words, all the movies occupy no. 1 for me. If you wish to start counting after that, consider Nana as no. 2.
2. Same issue applies with Maria-sama ga Miteru (all 4 seasons). I consider them as a whole and not taken separately. I just placed them sort of randomly (with the 4th at the top).
3. There are some series from which I only listed a season. This is just based on mere preference as well as there are series with weaker seasons. I just placed the one that I consider the best in the list (i.e. Zero no Tsukaima F, Inuyasha: The Final Act).
4. The order of the series is not that accurate. There are way too many to make a proper order. What you need to know though is that as you descend to the end of the list, the preference level also goes down. Most of the series I listed at the top are those that I cherish the most and that are virtually completed (not left in a clifhanger or something like that). Sure, there are others that are finished and that are placed lower but that is a question of preference.
P.S. Both the list and description are the subject of periodical update.