Overlooked films of the last decade

What are the most criminally overlooked films of the last ten years? Do you think they will eventually be appreciated for the masterpieces they are? Or are they bound for the dustbins, only to be discovered by true cineastes in the coming decades?

I am forever befuddled by the amount of people who haven't seen or haven't liked:

Master and Commander: The Far Side of the World
Children of Men
The Assassination of Jesse James by the Coward Robert Ford
United 93
A Serious Man

Honorable mention: Moon, The Proposition, Scott Pilgrim (very borderline).

I think these are honest to god great films. Masterpieces even. And yet, I suspect only Children of Men might gain Blade Runner type appreciation years after a lackluster theatrical release. Perhaps when people look back on the Coen Brothers' body of work and recognize them for what they are, as filmmakers to be considered alongside other greats like Scorsese and Kubrick and Wilder, A Serious Man will accrue greater respect.

What say you? Has it always been this way? What greats before this generation were lost and found? I know I'm forgetting some movies here too (or perhaps I overlooked them!).

I really liked Open Range, it has its moments and maybe I'll have to revisit it but it didn't leave much of an impact on me. I can say the same for In Bruges. That's a movie that should be right up my ally, but in the end left me feeling kind of cold (my gf at the time was legitimately upset that I didn't looove it, bitch).

The Lives of Others is one I need to see I guess, will netflix queue it now.

Ahhhh, Before Sunset! Knew I was missing something. One of my all time favorites, and another film I would list as an unequivocal masterpiece.

A lot of these movies being bandied about are good, or interesting, but not necessarily films that, in a just world, would be rightly regarded as the great films they are. Some of this might just be a matter of taste, but I was going more for movies that I think should be loved more generally but aren't. I loved The Fountain, but it's an odd film and not flawless (I have it on good authority that Arronofsky himself wasn't happy with it). Same with Brother's Bloom and Synecdoche, especially. I thought Synechdoche was an interesting failure, too pretentious and post-modern for its own good.

I'm sorry but that movie was dogshit. Same with Me, You and Everyone We Know. Can't stand them.

This thread is like a game of telephone... what started off as an attempt to discuss overlooked "modern classics" has become a list of good films that may or may not have gotten their due depending on your taste (see: Rescue Dawn).

I'd like to reiterate one of the questions in my original post, which is "Has it always been this way?" and the follow up "Examples?"...