[pi3832]

They're not up to Primer's level of complexity, but for bending your brain a little, try:

eXistenZ (http://www.imdb.com/title/tt0120907/)

Naked Lunch (http://www.imdb.com/title/tt0102511/)

(And other David Cronenberg movies. While I'm at it, although it's completely linear, I'm going to plug: "Crash" (http://www.imdb.com/title/tt0115964/).)

Jacob's Ladder (http://www.imdb.com/title/tt0099871/) is almost a great brain-bending movie, but for some damn reason at the very end there's a, "Let's explain what really happened!" scene. F'idiots. (I recommend stopping the movie when you get to the scene where the Jacob and his son (played by Macaulay Culkin) dreamily walk up a back-lit stairway together. Let the movie percolate in your brain for a while. Then, start the movie up again and see how they ruined it.)

[kstenerud]

All great movies. Some others (with varying degrees of sophistication):

The 13th Floor (http://www.imdb.com/title/tt0139809/)

A Scanner Darkly (http://www.imdb.com/title/tt0405296/)

Brazil (http://www.imdb.com/title/tt0088846/)

Time Bandits (http://www.imdb.com/title/tt0081633/)

Dark City (http://www.imdb.com/title/tt0118929/) - A little disappointing at the end though =/

[evincarofautumn]

I really enjoyed Dark City. The directors cut is best, though, because it doesn’t give away the twist at the beginning like the theatrical cut did.

[psykotic]

> A Scanner Darkly (http://www.imdb.com/title/tt0405296/)

It's worth watching for many reasons, but it'd be worth watching for this scene alone:

http://www.youtube.com/watch?v=Z2HP25bKztE

[mnutt]

One more is Timecrimes (http://www.imdb.com/title/tt0480669/)

[salemh]

No Pi? http://www.imdb.com/title/tt0138704/

[MengYuanLong]

Talk about timing. I just wrote up a list for a friend that includes a bunch of weird movies (most of them being head trips). My list includes two Cronenberg movies as well! Though, to be honest, I'm not really a fan of either. Heh, I know this is a little off topic but for those that dove this deep into the thread, maybe you would like to expand your weird movie viewing experience.

01. Eraserhead-- This feature film was the debut for Writer/Director David Lynch. The film is noted for its usage of sound as a theatrical device and "the baby" which is rumored to be created from an embalmed cow fetus. The films script is a scant 21 pages despite a running time of 85 minutes (script pages typically match runtimes).

http://www.imdb.com/title/tt0074486/ http://en.wikipedia.org/wiki/Eraserhead

02. Dead Leaves-- Produced in 2004, this Japanese animated film clocks in at 55 minutes long. The films (thin) plot is composed almost entirely of a chase/fight scene that begins on earth and ends on a space station. The movie's weirdness climaxes when when the mutant baby of the the film's protagonists is born and proceeds to kill a giant space catepillar which is attempting to eat the earth.

http://en.wikipedia.org/wiki/Dead_Leaves http://www.imdb.com/title/tt0439533/

03. House -- This 1977 Japanese film certainly ranks as one of the weirdest (if not the weirdest) movies of all time. It was unreleased in the U.S. until after a screening at the 2009 New York Asian Film Festival. In an iconic scene, a Japanese girl is consumed by piano monster as a green eyed catch watches.

http://en.wikipedia.org/wiki/House_(1977_film)

04. Jacob's Ladder- Fans of the game Silent Hill should well be aware of this movie from 1990 that inspired many of its elements. Tim Robbins stars as a vietnam war vet suffering from demonic images increasingly polluting his fragile reality. One paticularly gruesome scene includes Robbins being wheeled through a bloody hospital corrirodor filled with limbs and mutating torsos.

http://en.wikipedia.org/wiki/Jacobs_Ladder_(film) http://www.imdb.com/title/tt0099871/

05. Barton Fink- This Cohen Brothers film stars John Turturro as a novelist. The 1991 film closes with a set of iconic scenes including John Goodman exiting a burning hallway (like a badass).

http://en.wikipedia.org/wiki/Barton_Fink http://www.imdb.com/title/tt0101410/

06. Naked Lunch- The first of two Cronenberg films in this category. This 1991 film adaptation of a William S. Burroughs novel features a protagonist who uses bug spray as a chemical escape from reality. Talking insects and failed "William Tell Routines" are just some of the madness this movie contains.

http://www.imdb.com/title/tt0102511/ http://en.wikipedia.org/wiki/Naked_Lunch

07. Videodrome- David Cronenberg wrote and directed this movie staring James Woods. The movie centers around Wood's character, a sleazy TV exec, who inreasingly loses touch with reality after he comes across a station which airs extreme violence and torture. Key scenes include his merger with a TV set and a VHS tape being thrust into his stomach.

http://www.imdb.com/title/tt0086541/ http://en.wikipedia.org/wiki/Videodrome

08. Donnie Darko (Jake and Maggie Gyllenhall sp?)- Donnie Darko served as philosophical fodder for a whole generation of "Emos". Written and directed by Richard Kelly. The movie stars this brother-sister hollywood team. The movie covers a wealth of ideas including fatalism and time travel. Movie goers will inevitably remember the creepy bunny head that pervades entirety of the film.

http://www.imdb.com/title/tt0246578/ http://en.wikipedia.org/wiki/Donnie_Darko

09. Human Centipede- This 2010 dutch horror film quickly became a meme rivaling Two Girls One Cup for gross-out factor. The film features a mad doctor who connects three unfortunate souls in the most unfortunate way possible.

http://en.wikipedia.org/wiki/Human_centipede http://www.imdb.com/title/tt1467304/

10. Brazil- The second installment of Terry Gilliam's "Imagination Trilogy". This 1985 film represents the dreams of adults including navigating beurocracy and chasing true love. Robert DeNiro also provides a notable role as a rebel repairman in the film.

http://en.wikipedia.org/wiki/Brazil_(film) http://www.imdb.com/title/tt0088846/

11. Black Swan 12. Paprika 13. Being John Malkovich 05. Teeth