Serial Experiment Lain. You probably haven't heard of it, and you had to be introduced first to the anime subculture, then be not frightened away by the number of bad releases in that genre, then adjust to the japan mentality, take into consideration the fact, that it was basically pre-matrix (1998), watch the movie in a one night marathon, then start reading the mentioned, and omitted literature.
However, the sheer amount of mindfuck going on in each, and every episode vastly outnumbers every single movie mentioned above, and this makes it very worthwhile.