Nichijou is funny as hell. I've only legitly seen one episode, but I've seen a ton of clips.
This is Mio, a bright and cheerful girl sporting light blue hair and pigtails held by two small wooden cubes. She has a crush on Kōjirō. She is more 'normal' in contrast to her friend Yūko and often has to humor her to make her happy. She is also a talented manga artist who will occasionally draw dubious pictures of Kōjirō in her notebooks particularly yaoi.
Snagged that description from Wikipedia.