Some groovin' 1949 bebop to hand-painted film animation - must be Norman McLaren. This vid just felt right for a Sunday afternoon that seemed a bit lazy. Also, the music is played by Oscar Peterson. What more could you ask for? Make sure you snap your fingers at the end of this one.
Norman McLaren's "Dots" - Hand painted on film frames with soundtrack created by scratching the audio track of the actual film stock in various shapes and lengths to create tones. Almost 70 years old. Please check out some of his other stuff on YouTube.