Every once in a while you come across something so bizarre or surreal that you either have no idea what’s going on, or your mind actually adjusts to a level where you understand the allegory (or whatever) and end up thinking in completely terrible logic that would even be shaky in THAT universe for a week. Some examples of this include FLCL, the last couple episodes of Neon Genesis Evangelion, Serial Experiment: Lain, or to use a non-anime example, Carol’s Alice in Wonderland/Beyond the Looking Glass or maybe Disney’s Fantasia (well, those are more whimsical than “mindfuck”, but the nonsense makes it fit in my book).
I tend to like things on the extreme end of the spectrum either “vibrant” and “colorful” or otherwise “whimsical” (i.e. doesn’t take itself seriously) or really, really gritty or dark (any mix of these works too, I’d love a surreal whimsical noir). But anything is fair game really, books, music, movies, video games, TV, alien holocrons, if you can think of anything so bizarre or lacking sense it makes the heads of most mortal men spin I’d love to hear about it.