Here’s an anime series with no redeeming social value, except for the fact that it’s extremely funny. The full title is Shinryaku! Ika Musume (Invade! Squid Girl.)
Squid Girl (Ika Musume) is the name of a squid girl (Hisako Kanemoto) who decides to invade the land to punish humans for polluting the worlds oceans. She assumes that with her amazing squid powers she will have no trouble conquering humanity. She’s cute as a button and almost as smart; naive and evil in an innocent, childlike sort of way. Unfortunately Chizuru Aizawa (Rie Tanaka), the manager of a seaside restaurant, is also cute, not to mention smarter and more evil. Poor Squid Girl ends up being forced to work as a waitress.
Chizuru’s younger sister Eiko (Ayumi Fujimura) plays straight man to Squid Girl’s antics. Their younger brother Takeru (Miki Ootani) adores “Ika-nee-chan” and goes along with every idiotic idea she comes up with. Eiko’s friend Sanae Nagatsuki (Kanae Itou) wants to dress Squid Girl up in a variety of embarrassing costumes.
All this sounds a lot like Sergent Frog (Keroro Gunso) but to me it seems a lot funnier. Sergent Frog struck me as more annoying than funny.
Just don’t expect plot or character development or any kind of sensible ending. It’s just a bunch of gags strung together.