Saddest Endings You have seen.

[Owithrow]

The saddest ones for me-
Angel Beats
Ga-Rei Zero
Final Fantasy 10
Specificly the episode in futurama where fry finds his fossilized dog

[Outcast]

Gundam 0080 is the only thing I've watched with a particularly sad ending.

SPOILER! :

Bernieee! T_T

[Owithrow]

People say elfen lied is pretty sad at the end, but i havent finished that one.

[Outcast]

I didn't find it all that sad at the ending.

[Shnorkel]

I didn't find it all that sad at the ending.

Mabye the ending itself wasn't sad,

SPOILER! :

but Mariko's death was the freaking saddest thing that I have ever seen

Also Code Geass and Angel Beats.

[Rubisko]

Bladerunner. For empathic reasons I guess

[GunZet]

Samurai Champloo. Cause it ended.

[Renzokuken]

Samurai Champloo. Cause it ended.

Omg yes.

I'd say Bebop as well.

[Gaff]

Grave of the Fireflies is a pretty bad one. It's not even a spoiler to say the kids die at the end - the film tells you that right at the beginning.

[Matt]

Elfen Lied's saddest moment wasn't the ending, at least for me (personally, I found the ending to the manga more hopeful than sad). It was:

SPOILER! :

Kouta's sister is cut in half and killed right after he insults her. He is never able to apologize, and therefore has to live with the guilt forever, and she dies thinking he hates her.