Azumanga Daioh

Azumanga Daioh is the funniest thing ever. It's a show about a group of girls in high school. This anime has no real storyline, but there's a pattern of events as they go through all three years of high school (Japan has 3 years in high school because their elementary schools have 6). For example there are 3 episodes about the cultural festival, one for each year. The characters are all very different, and they all have funny problems they have to deal with (and almost never solved). I think the most interesting character is Chiyo (see picture). She is 10 years old and skipped five grades. She was always the shortest one even before she skipped five grades. There's a lot of humour derived from her, especially in Osaka's dreams (not Osaka-a place in Japan). Osaka's dreams often feature a visual joke on the the appearance of Chiyo's pigtails. In these dreams her pigtails make Chiyo fly, move on their own, control Chiyo's mind, might kill her if removed incorrectly.