Kyuukyoku Choujin R

A gag anime by Masami Yuuki from 1985.  It's one of the oddest, funniest manga I've read and it also has nice artwork.

It's hard to summarize this manga, because it doesn't really have an overreaching story that ties it all together. To sum it up, though, it's about a really weird android and his equally weird friends as they go through high-school.  And there's a world domination plot in there somewhere, too.