There is so much here to praise, where to begin?
Writing the equal of Woody Allen's sharpest urbanity. Story woven with understory interleaved with back-story. Non-stop desert-dry humor delivered with cutting but subtle irony. (E.G. the scene in which the subway girl at the Halloween party looks at Felix and says, "Are you always this funny?".)
Acting so natural it could not have been acting.
Photography and lighting primitive but perfect. Sound quality excellent. Editing expert and effective.
Like a layer of transparent frosting, in nearly every scene the filmmaker smears mockery over the film itself and its characters. And yet, after being immersed in a seemingly non-stop train wreck of sarcasm which eventually mildly sprained my sense of humor, at the final scene I cried.
Reality TV wishes it might maybe someday approach this level of authenticity.
I will always cherish this film and those shining talents who created it.