Clannad, because it was genuinely heart-wrenching.
Soul Eater, because the last episode showed me that I should have watched up to...49, maybe, and then stopped.
Fullmetal Alchemist. Well, the manga. Chapter 107. I'm a huge Al fan.
I'm glad he got his body back.
Air, because it was also very touching.
Higurashi Rei, because the ending was sweet.