Well I don't know if it's just me, but I found 5 Centimeters per Second really depressing.
! Especially the ending, where Takaki gets a text from his (ex?)-girlfriend saying how she feels that even if they exchange a thousand messages, their hearts won't move closer; I found that really heartwrenching.
! Then there's the very very end, where Takaki and Akari pass each other at the train crossing. Most people would assume (or maybe it's just me? Haha) that they would see each other, wait until the train passes, then jump into each other's arms (or at least strike up conversation, or SOMETHING). But when the train passes and only Takaki is left, I couldn't help but feel bad for him, ya know?
2. Clannad is also really depressing. Every time I watch the movie, I cry. Every time. And I've watched that thing like, 5 times already. D:
! I think it's really the part where Tomoya's dad goes to Sanae (was it?) and asks her to get Tomoya out of his depression, and then where he sees Ushio at the train station and she runs into his arms. That really got me.
3. Fullmetal Alchemist. I don't know if it's just me, but I thought that the ending of the anime was just so… ARGH.
! I remember crying on a Saturday night (yes, I have no life ._.) and I kept going back to the part where Ed dies ): It was awful.
4. Air was quite depressing too. I won't elaborate on it, but the episode where Misuzu's dad came to take her away and she ran back to her aunt made me sob. Like, SOB.
Anyway, I'm done (: