Movies where the villian wins / with a sad ending.

Night of the living dead - original.
One of best endings ever, never saw it coming!

But when you know how it ends it is not interesting.

Identity
Arlington Road
Buried

Heat

No Country for Old Men

Sad endings:

• The Fly (1986)
• The Elephant Man
• One Flew Over the Cuckoo's Nest

Good guys don't live happily ever after:

• Pet Sematary
• Candyman
• The Thing (John Carpenter)

Pretty much any war movie.

Saving Private Ryan xD

Depressing/the-psycho-gets-away-with-it/everyone dies endings:

• Glory (1989)
• The Hole (2001)
• Life Is Beautiful
• Beyond Borders
• From Hell

Bittersweet endings:

• The sixth day
• The bicentennial man

Der Untergang - Downfall

I Am Legend.

I find Bridge to Terabethia kind of sad. Like, it's not like I imagined it to end. I guess this is not what you're looking for, though.

Watchmen!!!

Rosemary's baby! Ending is one of the best!

Fallen - denzel dies and the demon struts off whistling. pure awesome.

Shutter Island.

2000/2004 US presidential elections

There are lots of good ones:

• Chinatown
• One Flew Over the Cuckoo's Nest
• No Country for Old Men
• Se7en
• Oldboy

Cloverfield.

The Plague Dogs

Aren't they all automatically spoiled to you, when other people tell you how they end? What's the point?

And if there's one thing Alien 3 has going in it's favor, it's that the good guys lose bigtime. The bad guys - well they lose too, but for them it's filed under "acceptable losses".

Stoker

Walking Dead Season 1 :<