In no particular order:

Hitchcock
Ozu
Kurosawa
Lynch
Lean
Tati
Cocteau
Kubrick
Wilder
Fellini

Kubrick - Have most of the Kubrick collection, want Spartacus: CC

Lynch - Have my favorites, would like to pick up Dune and The Elephant Man at some point, and waiting for a good Lost Highway DVD

Altman - Have most of his seventies output, need to get his more recent work

Spielberg - Have all the ones that I love, need a few more (Empire of the Sun, Duel) that I like

Herzog - Have the Anchor Bay set, looking forward to the next one

Tarantino - Have all his features, could probably pass on Four Rooms

Bergman - Have six of his, including the great CC Film Trilogy set, but he's done so much great work that I'm still catching up

Scorsese - Same as Bergman. August can't come soon enough.

Hitchcock - Have a lot of of his fifties and sixties films, still want a lot of his earlier work.

John Carpenter - Kind of the odd man out, but his movies are addictive. Have most of his seventies and eighties output, need Assault on Precinct 13.

These are the ones that come to mind -- or at least the ones that seem to be best represented in my collection...

Akira Kurosawa
Alfred Hitchcock
Sergio Leone
Orson Welles
Fritz Lang
Charlie Chaplin
Steven Spielberg
Francis Ford Coppola
Billy Wilder
The Coen Brothers

Also, I know he's not for everyone (or even most people), but my collection wouldn't be complete without:

Jim Jarmusch

Also worth mentioning, simply because no one else has:

Jean-Pierre Melville

OK, that's actually twelve (or, rather, thirteen if you count Joel and Ethan), not ten. Ah well...

I can't believe no one has mentioned Cameron Crowe!!!!!!

Say Anything
Singles
Jerry Maguire
Almost Famous
Vanilla Sky
Fast Times (Screenwriter)

Orson Welles:

Touch of Evil
Citizen Kane
The Stranger

Carl T. Dreyer:

Passion of Joan of Arc
Ordet
Day of Wrath
Gertrude

Akira Kurosawa:

Throne of Blood
Stray Dog
Roshoman
Ran
Red Beard
Seven Samurai
Yojimbo
Sanjuro
Hidden Fortress

Alfred Hitchcock:

To Catch a Thief
Rear Window
North by Northwest
The Birds
Notorious
The 39 Steps
Rebecca
The Lady Vanishes
Spellbound

Coen Bros:

Miller's Crossing
Barton Fink
Fargo
The Big Lebowski
Intolerable Cruelty

Tim Burton:

Big Fish
Edward Scissorhands
Pee Wee's Big Adventure
Sleepy Hollow
Mar's Attacks

Michael Curtiz:

Casablanca
Adventures of Robin Hood
Yankee Doodle Dandy

John Ford:

Grapes of Wrath
How Green Was My Valley?
My Darling Clementine

Jim Jarmusch:

Ghost Dog
Mystery Train
Dead Man

Stanley Kubrick:

The Shining
A Clockwork Orange
Dr. Strangelove

So many more...

Why just ten?

Woody Allen - Bananas
Paul Thomas Anderson - Hard Eight
John Boorman - Excalibur
Mel Brooks - Young Frankenstein
Luis Buñuel - The Discreet Charm of the Bourgeoisie
Frank Capra - It Happened One Night
Charlie Chaplin - City Lights
Jean Cocteau - Beauty and the Beast
George Cukor - A Star is Born
Francis Ford Coppola - The Conversation
Stanley Donen - Singin' in the Rain
John Ford - My Darling Clementine
Howard Hawks - The Big Sleep
Alfred Hitchcock - Psycho
Alejandro Jodorowsky - El topo
Chuck Jones - Duck Amuck
Terry Jones - Monty Python's Life of Brian
Stanley Kubrick - A Clockwork Orange
Akira Kurosawa - Ikiru
Fritz Lang - Die Nibelungen
David Lean - Lawrence of Arabia
Spike Lee - 4 Little Girls
Sergio Leone - Once Upon a Time in the West
David Lynch - Eraserhead
Michael Mann - Thief
Hayao Miyazaki - Princess Mononoke
F.W. Murnau - The Last Laugh
Michael Powell & Emeric Pressburger - The Red Shoes
Godfrey Reggio - Koyaanisqatsi
Nicolas Roeg - The Man Who Fell to Earth
Steven Spielberg - Raiders of the Lost Ark
Wladyslaw Starewicz - The Story of the Fox
Preston Sturges - Sullivan's Travels
Jacques Tati - M. Hulot's Holiday
Jacques Tourneur - Night of the Demon
Orson Welles - Touch of Evil
Billy Wilder - One, Two, Three
Edward D. Wood Jr. - Glen or Glenda?
William Wyler - The Best Years of Our Lives

Yes, I *must* have these directors. Paycheck minus bills kind of holds me back though.

Sergio Leone
Fistful of Dollars
For A Few Dollars More
The Good, the Bad, and the Ugly
Once Upon a Time in the West
A Fistful of Dynamite
Once Upon a Time in America

Sam Raimi
Evil Dead
Evil Dead 2
Army of Darkness
Spider-Man

Steven Spielberg
Indiana Jones Trilogy
Close Encounters of the Third Kind
Jaws
Catch Me if You Can
Schindler's List
Empire of the Sun
E.T.
Minority Report
Saving Private Ryan

Peter Jackson
Lord of the Rings Trilogy
Dead Alive
Bad Taste
The Frightners

Tim Burton
Batman
Batman Returns
Sleepy Hollow
Big Fish
Edward Scissorhands
Ed Wood
Peewee's Big Adventure

Terry Gilliam
Brazil
Monty Python and the Holy Grail
Adventures of Baron Munchausen
Jaberwocky
12 Monkeys

Ridley Scott
Gladiator
Alien
Black Hawk Down
Duelists
Legend

David Cronenberg
Naked Lunch
Videodrome
Spider

Mel Brooks
Spaceballs
The Producers
Young Frankenstein
Blazing Saddles

Steven Chow
Shaolin Soccer
Fight Back to School
Forbidden City Cop
God of Cookery
King of Comedy

Not alot of classic directors on there I know, but this isn't exactly the 10 directors that I think are the best directors ever. These are simply the 10 whose work I enjoy the most and who I am most likely to intentionally seek out other movies by based on name alone.

more than ten, but going through my collection, these are ones that i'm consistently happy with.

Coen Brothers
Wes Anderson
Alfred Hitchcock
Stanley Kubrick
John Sayles
David Lynch
John Carpenter
Dario Argento
Otto Preminger
Peter Jackson
Christopher Guest
Tim Burton
Mel Brooks
Larry Cohen
Terry Gilliam
George A. Romero
Terry Zwigoff
Robert Wise
Terence Fisher
Elia Kazan
Charles Chaplin
P.T. Anderson
Meir Zarchi
F.W. Murnau
Robert Altman
Martin Scorsese
Akira Kurosawa
Roman Polanski
Alejandro Jodorowsky
Krzysztof Kieslowski

Henri-Georges Clouzot
Wages of Fear
Diabolique
Le Corbeau

Lina Wertmüller
Seven Beauties
Swept Away
Love and Anarchy
The Seduction of Mimi

Werner Herzog
Even Dwarfs Started Small
Aguirre: The Wrath of God
Enigma of Kaspar Hauser
Heart of Glass
Stroszek
Woyzeck
Cobra Verde
Lessons of Darkness
Invincible

Jean-Pierre Melville
Bob Le Flambeur
Le Cercle Rouge
Un Flic

Preston Sturges
The Lady Eve
Sullivan's Travels

John Carpentar
Assault on Precinct 13
The Thing
They Live

Roman Polanski
Knife on the Water
The Tenant
Rosemary's Baby
Chinatown

Luis Bunuel
Diary of a Chambermaid
Discreet Charm of the Bourgeoise
That Obscure Object of Desire

Takashi Miike
Audition
Happiness of the Katakuris
Visitor Q
Ichi the Killer

Roberto Rossellini
Open City
Germany Year Zero

(To save space, I've only listed my favorite film by the director that is available in R1)

Top Ten:

Woody Allen: Annie Hall
Mel Brooks: The Producers
Charles Chaplin: Modern Times
Francis Ford Coppola: Apocalypse Now
Stanley Donen: Singin' in the Rain
Alfred Hitchcock: North by Northwest
Stanley Kubrick: A Clockwork Orange
Ernst Lubitsch: Trouble in Paradise
Preston Sturges: Sullivan's Travels
Billy Wilder: One, Two, Three

Honorable mentions:

Robert Altman: M*A*S*H*
Ingmar Bergman: The Seventh Seal
Frank Capra: Mr. Smith Goes to Washington
Blake Edwards: A Shot in the Dark
Fredorico Fellini: 8 1/2
John Ford: The Quiet Man
Bob Fosse: Cabaret
Howard Hawks: Rio Bravo
Elia Kazan: On the Waterfront
Buster Keaton: The General
Akira Kurosawa: Yojimbo
Richard Lester: A Funny Thing Happened on the Way to the Forum
David Lean: Lawrence of Arabia
Roman Polanski: Chinatown
Jean Renoir: The Rules of the Game
François Truffaut: Day for Night
Orson Welles: The Trial

1. Alfred Hitcock: North by Northwest
2. Billy Wilder: Some Like it Hot
3. John Huston: Maltese Falcon
4. Speilberg: Jaws
5. Lucas: Star Wars
6. Michael Mann: Last of the Mohicans
7: Kubrick: 2001
8: Martin Scorsese: Good Fellas
9. Orson Wells: Citizen Kane
10. Frank Capra: Mr. Smith Goes to Washington

Directors I currently collect or plan to collect. Check my dvdaf list for title listings.

Mario Bava
Fritz Lang
David Cronenberg
Sam Peckinpah
Sam Fuller
Nicholas Ray
Hitchcock
William Castle
George Romero

...and last but not least: Don Knotts movies!

Unfortunately my two favourite director's don't have alot of their films on DVD:

Peter Greenaway:
[Have)
- Early Films + The Falls
- Zed and Two Nougths
- Draughtsmen Contract
(Want)
- Prospero's Books
- Baby of Macon (I am not buying the Region 4 fullscreen version)

Ken Russell
(Want)
- The Devils
- The Boyfriend


Other favourite directors:

Hayao Miyazaki
- Princess Mononoke
- Kiki's Delivery Service
- Nausicaa and the Valley of the Wind
- Porco Rosso
- My Neighbor Totoro

Ken Loach
- My Name is Joe
- Riff Raff

Joe Dante
- Gremlins
- Innerspace
- The Howling

John Waters
- Hairspray
- Pecker

Dario Argento
- Sleepless
- Phenomena
- Suspiria
- Deep Red
- Tenebrae
- Opera

Lucio Fulci
- Zombie 2
- Gates of Hell
- New York Ripper
- House by the Cemetary
- The Beyond

Terry Gilliam
- Adventures of Baron Munchausen (Criterion LD/Japanese Superbit edition)
- Brazil

Ridley Scott
- Blade Runner (Criterion LD/WB DVD)
- 1492 (Japanese laserdisc)
- Legend
- Black Rain
- Alien

James Cameron
- Titanic
- Aliens
- The Abyss
- Terminator 2

Steven Spielberg
- Schindler's List
- ET
- Saving Private Ryan
- Empire of the Sun
- Jurassic Park
- Close Encounters of the Third Kind
- Jaws
- Indiana Jones Trilogy

_________________________

My collection doesn't really revolve around directors. The only exception is Terry Gilliam.

I have:
12 Monkeys
Brazil: Criterion
Monty Python films
Jabberwocky (not his finest moment; I bought it sight-unseen)

I've been tempted to get some Kurosawa and Chaplin though. It just hasn't happened yet.

Joel & Ethan Coen
Raising Arizona
Blood Simple
Fargo

John Carpenter
Halloween
The Thing

Francis Ford Copola
The Godfather trilogy
Apocalypse Now

Cameron Crowe
Fast Times at Ridgemont High
Almost Famous

Alfred Hitchcock
Rear Window
Psycho
Notorious

James Cameron
Terminator 1 and 2

Stanley Kubrick
A Clockwork Orange
Dr. Strangelove
2001 Space Odyssey

Buster Keaton
The General
Sherlock Jr.
One Week

David Lean
Lawrence of Arabia
Bridge on the River Kwai

Sergio Leone
Fist full of Dollars
For A few Dollars more
The Good, The Bad & the Ugly

Martin Scorcese
Taxi Driver
Good Fellas
Casino

Steven Spielberg
Jaws
E.T.
Close Encounters of Third Kind
Raiders of the Lost Ark
Jurassic Park
Saving Private Ryan
Schindler's List

Steven Soderberg
Traffic

Quentin Tarantino
Reservoir Dogs
Pulp Fiction
Jackie Brown
Kill Bill V1 & 2
True Romance (writer)

Guy Ritchie
Snatch

Orson Welles
Citizen Kane

Oliver Stone
Quentin Tarantino
Stanley Kubrick
Sergio Leone
Akira Kurosawa
Terry Gilliam
Takashi Miike
Martin Scorsese
Spike Lee
Brian De Palma

Alfred Hitchcock
M. Night Shyamalan
Peter Jackson

~Tricia

Martin Scorcese
Arkira Kurosawa
Terry Gilliam
Stanley Kubrick
Quentin Tarantino
Kevin Smith
George Lucas
David Fincher
Bryan Singer
P.T. Anderson
Coen Bros.
Steven Soderbergh
Brian DePalma
Wes Anderson

edit: M. Night Shyamalan and Peter Jackson (reminded of by previous poster)

And more I'm sure but thats just off the top of my head.

Great thread by the way.

Not gonna bother listing all the films I own of theirs, since I own all of them in most cases.

Coen Brothers
Stanley Kubrick
Alfred Hitchcock
Steven Spielberg
PT Anderson
Wes Anderson
Spike Lee
Martin Scorsese
Akira Kurosawa
Quentin Tarantino

I cant believe that only one other person, Exister, has given the thumbs up to Bava. I see people mentioning Argento and Fulci...and I'm shocked. how can you leave out Bava? it's a crying shame.

Serigo Leone
Dario Argento
George Romero
Larry Cohen
Werner Herzog
Charlie Chaplin
Paul Verhoeven
Mario Bava
Clint Eastwood
Sergio Corbucci

No real order here..

Ingmar Bergman
Federico Fellini
David Lynch
Stanley Kubrick
Wes Anderson
Akira Kurosawa
Paul Thomas Anderson
Spike Jonze
Jim Jarmusch
Alfred Hitchcock

Other mentions to Tarantino, Leone, Renoir, Welles, Chaplin, Coens, Coppola, Gilliam, Scorsese, Lang, Ford, Cronenberg so many to list as others have. Missing many I am sure.

If anyone still bothers to read these things, here are mine. . .

Godard

Kurosawa

Cronenberg

Gilliam

Fulci

Sergio Leone

Dario Argento

David Lynch

Sergio Corbucci

Spielberg - Only for Jaws.

I'm glad to see someone who'll agree that Jaws is his best work.

Alejandro Jodorowsky - Santa Sangre
Mario Bava - Black Sunday
George A.Romero - Martin
Lucio Fulci - The Beyond
David Cronenberg - The Fly
John Carpenter - Halloween
Peter Jackson - Heavenly Creatures
Wes Craven - A Nightmare On Elm Street
Steven Spielberg - Schindler's List
Federico Fellini - 8 1/2