George Orson Welles.

I'm not a complete completist. I don't go so far as to get multiple copies of films from different regions.

As for the people I do get everything that's available they are:
Johnny Depp
Halle Berry
Thandie Newton
Zhang Ziyi
Marilyn Monroe
James Dean
Bruce Lee
and the only director, Kevin Smith

David Cronenberg
Guillermo del Torro
Hayao Miyazaki

[Hitchcock]Actuurs are cattuull[/Hitchcock]

I don't have any complete DVD collections, though I did have all of Kubrick's available features on VHS, then I managed to see all those features in theaters, many multiple times. Aside from Barry Lyndon and a few others I don't feel the need to purchase any more of his DVDs.

Alex Cox — everything available, including the PAL DVD of Highway Patrolman. Still looking for a reasonably priced copy of Walker.

Tsai Ming Liang — everything available except The River (which I have seen).


Directors I'm working on seeing everything in their filmographies:

Luis Bunuel — about halfway there (keep kicking myself for missing about half of a Bunuel retrospective 3 years ago)

Apichatpong Weerasethakul — I plan to see every one of his features that makes it to Chicago, so far that includes Mysterious Object at Noon, Blissfully Yours, and Tropical Malady. (I do have Mysterious Object at Noon on DVD)

Takashi Miike — seeing all of his stuff is as close to a completely futile task there is.

Jim Jarmusch — missed a screening of Permanent Vacation, but that's it.

Working on all Tom Cruise movies
Would love to have all by Spielberg and Hitchcock, but $$$ is getting tight.

Akira Kurosawa is really the only director I must have every movie from. I do own every Paul Thomas Anderson film but that's like bragging about having every Fincher or Wes Anderson film. Umm, as for actors, well I do have a bunch of Cary Grant films but not every single one. Another director I love is Steven Soderberg and I have almost every movie of his pre-Ocean's 11. And one last thing, I'll probably end up buying every single David Gordon Green movie until he retires.

Kurosawa
Tarentino :D
Miyazaki

Directors are too easy if you only consider feature films. There must be 20 directors for which I own all their available work (Tarantino, Soderbergh, Kubrick, Shyamalan, Coen, Mann, Scorsese, Smith, Gilliam, the list goes on ...) I'm sure millions of people have everything Lucas has directed.

Actors, on the other hand ... oddly, I own almost everything with Tom Cruise, but not by design.

das

Another Bruce Lee fan here.

Yeah It's gonna be impossible to see everything he's done, but I plan to get close.

Ian Hart
Robert Carlyle

Alfred Hitchcock
James Bond (not sure if that counts)
Ingmar Bergman
Luis Bunuel

there are several directors for which i am a completist.

Martin Scorsese - this includes the criterion LD Three By Scorsese (italianamerican, american boy, big shave), as well as the episode of Amazing Stories he did and the Michael Jackson video, "Bad".

also, i own everything available for...
Paul Thomas Anderson
Wes Anderson - including the Bottle Rocket short
Michaelangelo Antonioni
Ingmar Bergman
John Carpenter - everything before In The Mouth of Madness
John Cassavettes - not as an actor
Joel & Ethan Coen - with the distinct exception of The Ladykillers, which i will not be adding
Jean-Pierre & Luc Dardenne
Jean Luc Godard - everything up to Week-end
David Gordon Green
Christopher Guest
Krzysztof Kieslowski
Stanley Kubrick
David Lynch
Lukas Moodysson
Lynne Ramsey
Andrei Tarkovsky
Wong Kar-wai
Zhang Yimou

Spielberg, Tarantino & Scorcese.

Kate Winslet
Jim Carrey
Tom Cruise

sure, you are... ;)

I am not really a total completist. I collect most Hitchcock, De Niro, Pacino, Bill Murray, Johnny Depp, and Brad Pitt movies. However, if I do not like one, I will not keep it in my collection.

Not a true completist but a majority of Lau Kar Leung films.

Yeah, I have all the Bond's, but wasn't sure either.

Steven Spielberg
Tom Cruise
Tom Hanks
Edward Norton
Steve Buscemi
Philip Seymour Hoffman, baby!!!!!!

I have purchased just about every movie Peter Mayhew is in.

Hmm...for directors: Albert Pyun, Uwe Boll....no not really
I have most of the available Argento, Fulci, Lenzi, and other Italian horror directors..Tarantino and Bruce Lee, though those are easy to collect.

Directors:
Paul Thomas Anderson
David Fincher
Paul Verhoeven - although I've only got his stuff from Robocop onward
Wes Anderson
Quentin Tarantino
Jean-Pierre Jeunet (still working on that one slowly)
somewhat David Lynch
Darren Aronofsky
Richard Kelly :D

I recently acquired The Ladykillers for the sole purpose of owning every Coen Brothers film. It wasn't a bad film per se, it was just a bad Coen Brothers film.

Michael Bay

John Carpenter... I think i have like 21 DVD's of his now.

I currently own every feature available on R1 DVD for:

Paul Thomas Anderson
Wes Anderson
Darren Aronofsky
The Coen Brothers
Sofia Coppola
Alejandro Gonzales Inarritu
Charlie Kaufman
Richard Kelly
Harmony Korine
Sam Mendes
Chris Nolan
Alexander Payne
Kevin Smith
Quentin Tarantino

I'm missing x-number of films for the following:

Ingmar Bergman - 8 (that MGM set would knock out 5 of them)
Larry Clark - 1 (Teenage Caveman)
David Gordon Green - 1 (Undertow)
Stanley Kubrick - 3
Richard Linklater - 4
Martin Scorsese - 4
Gus Van Sant - 2

I also intend to get everything from Lynch, Hitchcock, and Kurosawa.

-JP