One Punch Man

A satire of the entire superhero and shonen anime genre: Saitama is so powerful he defeats every enemy with a single punch, and he's bored out of his mind because of it. The comedy works because the show is simultaneously a genuine superhero anime with incredible fight animation (Season 1 by Madhouse is legendary) and a deconstruction of power fantasy. ONE's original webcomic went viral, Yusuke Murata's manga redrew it beautifully, and the anime adaptation became a global phenomenon. It's the anime for people who think anime takes itself too seriously.