The Chumscrubber

The Man Who Would Be King

Not only is it my all time favorite movie and is the best movie to star Sean Connery or Michael Caine it is the best movie directed by John Huston (including The Maltese Falcon).

Jacob's Ladder. I didn't quite understand it the first time around. I watched it again and loved it.

Heist. The knock on this movie is that it tries to be too clever but I loved it. It's a Mamet movie with great actors.

Another great Mamet movie is Glengarry Glen Ross. While it's popular on imdb, few casual movie fans have heard of it, which is a shame.

Almost Famous - the theatrical version is very good. The Bootleg Cut is great!

Wonder Boys - Michael Douglas, Toby Maguire, Robert Downey Jr. at their best.

Kingdom of Heaven - The Director's Cut brought a mediocre film up to an incredible film!

McCabe and Mrs Miller - Altman's best film imho

Almost Famous Directors Cut - I wish it was 4 hours long!

Tunes of Glory - Alec Guiness is absolutely mesmerizing in this - one of my favorite films of all time

Dazed and Confused - simply the best use of music and 70s nostalgia ever put to film.

Whale Rider - I just love this one..

Smoke Signals - the best work of Native American cinema out there - and it's absolutely a masterpiece of storytelling.

Glengarry Glen Ross is EXACTLY like the Radio Shack I work at. My one co-worker is Shelley "The Machine" Levine, I swear to god. I even have a nickname for him, and he's just as sale-hungry as he is. I told a co-worker of mine to watch it and we've been saying "Fuckin' amatchas!" daily. A great, great movie, the type that works both as divinely awesome and absolutely hilarious no matter what happens.

While we're talking about Mamet, what about House of Games?

"I'm from the United States of KISS MY ASS!"

Lots of good ones already listed.

I'll add "Hearts in Atlantis".

My first thought.

Let me add another vote for Memento. I would also like to mention Requiem for a Dream.

Bring Me the Head of Alfredo Garcia
Pat Garrett and Billy the Kid
Paris, Texas

Anything by Christopher Guest

Kubrick's older films (The Killing and Paths of Glory) are often overlooked.

And the most overlooked, absolutely fantastic film:

Monte Hellman's Cockfighter

not sure how "minor" some of these are, but:

Brick
The Lookout
The 25th Hour
Memento
The Hottest State
Bottle Rocket
A Guide to Recognizing Your Saints
La Haine (Hate)
The Man From Earth
Once
Go
The Squid and the Whale
L.I.E.
Me and You and Everyone We Know
Frailty
Green Street Hooligans

I don't really get the term but these overlooked American films came to mind..

Medium Cool (Haskell Wexler)
Mikey & Nicky (Elaine May)
Friday Night (Claire Denis) - french
The Funeral (Abel Ferrara)
Matewan (John Sayles)

Angel-A

watch it! PLEASE!

Agree with a lot of these...I'll add:

A Simple Plan

Pretty Persuasion

Imaginary Heroes.

I'll certainly agree with your two Kurosawa picks...and I'd also add Ikiru to that list. Red Beard is probably my favorite overall, and High and Low completely floored me. I wasn't expecting as much out of it, but it was really solid the whole way through.

The Station Agent

Lawn Dogs.

'Spartan'...

'The Limey'...

'Frailty'...

'One False Move'...

'Ronin Gai'...

'Touchez Pas Au Grisbi'...

'Man On The Train'...

'Harsh Times'...

'Musa The Warrior'... (uncut Korean release)

'Izo'...

there's a few off the top of my head...

The Orphanage.

Totally agree with Kiss Kiss Bang Bang.

Running on Empty - Excellent movie, with great performances all around. The scene with Christine Lahti and Steven Hill is one of the most heartbreaking and emotional scenes ever put to film.

Too early for The King of Kong: A Fistful of Quarters? Maybe the fact that I was smack in the middle of that era colors my judgment.

Bottle Rocket
True Romance
Brick
Kiss Kiss Bang Bang

Brain Damage

This movie is so damn great and nobody I meet ever knows about it.

Three from the 80's that I really enjoyed:
"Near Dark"
"The Hidden"
"Tucker: The Man and His Dream"