The Remains of the Day (1993)
so many movies, so little time

I was affected by this film and feeling depressed for days after watching it I've watched it several times since and it always leaves me with this uncomfortable, empty feeling. But I guess that's also part of its magnificence.

Try Requiem For A Dream.

For depressing, see
Eraserhead (1977)
.
For bleak, see
A torini l (2011)
.

Kichiku Dai Enkai, and Martyrs are two pretty bleak films.
Sid woz ere

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No, but its quite certainly the most hysteria-stricken movie Ive ever seen. And it also gives Raising Arizona a good run for its money as a film with the most yelling in it.
It IS undeniably bleak and unforgiving, though.
"facts are stupid things" - Ronald Reagan

Salo is by far the most depressing film.

Most depressing? Nah. For most depressing I'd nominated Dead Ringers as well as Last Exit to Brooklyn.

naked by mike leigh is hands down the bleakest and most depressing film ever (imho) [/Qoute]
OK, I know that a person's of a film or any creative work for that matter will be shaped by their view of the world, their expectations and their experiences but that film was hilarious! Now it was blackly comic and not everyone likes that and most of the characters in the film were in a dead end in one way or another, plus the nasty landlord but Johnny is one of the best British tragicomic creations to be put on film in my opinion. He's a pretty troubled guy to say the least but almost everything he says, including rants, is at least engaging, if not hilarious.
Johnny making fun of angry Scottish guy's nervous tick
Angry Scotch bloke : You tekkin' deh p*ss?!!
Johnny : You're beep givin' it aweh!
I'm a Mike Leigh fan.

naked
by
mike leigh
is hands down the bleakest and most depressing film ever (imho)

TPFWWM has a pretty happy ending.

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Come and See is simply brilliant! It is depressing but very human. And with humans there is always a tiny hint of the possibility of hope
But I have to say that the most brutal film that I have ever seen (and numerous times) has to be
Threads
. It wouldn't get much bleaker if one would stare black screen for couple of hours. But it is an important film ("funnily" made for TV) for the whole damn mankind! I saw it as a kid for the first time and it really scared me but also gave hope that these are human decisions, they are not set in stone. We can change the world. And you know what, cold war ended. I know that those warheads are still waiting like some satanic fingers of doom, but at least we can breath more freely.
"zoom back camera"

Little Miss Sunshine. Ha, ha (no really).

Try Shura or Come and See.

I see where you're coming from but I found it too surreal to be set in the real world - first film i think of when people mention depressing is Lilja 4 Ever http://www.imdb.com/board/10300140/ - The film starts off with a 16 year old girl being abandoned by her mother who runs away with her lover to America and then things just go downhill for her from there on