FLCL
Calling FLCL anything other then batshit insane would be doing it a disservice and I mean that in the best way possible.
The anime just oozes originality and character. From the extraordinarily great animation, the unique and incredible soundtrack to the actual (insane) contents of the anime’s plot, FLCL truly is a masterpiece in all regards.
So overall definitely one of the best anime out there, one of my favorites at least, and also an anime that really put in the work for the cult status it holds today in the community.