Naturally it is a post-apocalyptic surrealist black comedy about the landlord of an apartment building who creates cannibalistic meals for his odd tenants (IMDB source).

There is a definate nod to Terry Gilliam's Brazill in this movie, I can't quite put my finger on it though. Maybe the intimate camera work?

One of the few films I went out and bought on VHS - it was that good.

Carrot & Jeunet, awesome stuff.
Not sure if it's particularly architectural in a blade runner sense but it's a very atmospheric movie and definitely a great watch.

it's Caro not Carrot...

Delicatessen, is a great movie I saw a few years ago...
I you like French Movie and their futuristic Film Noir artistic direction...
try:

Immortal,
http://www.immortel-lefilm.com/
a blade-runner-ish movie based on the work of famous Cartoonist Enki Bilal with amazing futuristic 3d city scenes.

La Cité des Enfants Perdus,
http://www.imdb.com/title/tt0112682/

I think from the same guys who did delicatessen.

you could try as well
C'est arrivé près de chez vous (I guess it has an english translation...)
http://www.imdb.com/title/tt0103905/

a belgian film, from the Blair Witch project type...some students follow a serial killer for a video documentary...where the killer permits to criticize Corbusier and european residential developments.

Get to the screening on time as the opening credits are brilliant. A continuous camera pan with the name of the person being credited rendered in some way that relates to what they do. So the name of the costume designer is embroidered on cloth, the lighting designer is spelled out in bulbs or something (I can't quite remember that one). Overall the sense of materials and claustrophobia is amazing.

The Rube-Goldberg-esque suicide machines are wonderful. The guy who raises snails and frogs - a new slant on urban farming! There is namazing view downward through the building with water...I don't want to ruin it so I won't say more.

Just an amazing movie. You may want to watch it twice.

I would also recommend another 60's French flick called 'Playtime' by director Jacques Tati where he addresses the alienating effects of the modern international style on people in a very humorous way. The sets are pretty amazing, they cost so much money at the time that they proved to be the director's demise after the movie failed commercially. A restored version of the movie was recently re-released i believe. In another movie called 'My Uncle' Tati also addressed the issues of post-war architectural modernity and its influence on people's lives.

Speaking of the French, The New Wave classic "Last Year at Marienbad" tops my list along with Goddard's (english title) "Breathless", where the role of modern architecture is clearly set as a backdrop to the scrambled psyche of the modern man.

check this out: CASSHERN

oh god, please stay away from casshern........ it is the WORST crap ever; totally blunt, hastily executed CG backgrounds, ludicrous story, horrid, HORRID "idoru" actors and everything else that makes japanese high budget flicks fail so baaad over the last coupla years...

i'm also wondering what makes a movie qualify as "architectural". that is, beyond the characters discussing architecture on-screen-- to me, it really boils down to whether there is a sense of the (built) environment adding to a movie's athmosphere, or being somehow related to the plot, manipulating how people behave, or symbolizing, commenting on behaviour, gestures, etc

u should watch all by ming liang tsai. how the characters relate to their environment is totally awesome, in a detached sense (tsai once described the "search for the ideal location" as one of the most difficult& crucial tasks he faces as a filmmaker);

lets just stick to discussing Delicatassen