Quality series with fun characters and excellent animation, with extra replay value due to its high density content -- the series parodies so many things that you really need to step through it frame by frame with an encyclopedia at hand, from famous movies (e.g. Laputa, Terminator) to games (e.g. Air, Super Mario) to manga (e.g. MMR and the original magazine where Pani Poni was serialized). Also, what you hear in the dialogs are often different from what you see on screen, and there are usually several things happening on screen. The "Dash!" bit in the title, added to the original manga title which was just "Pani Poni", is totally justified by the high pace. This is definitely a series where you would want to watch again and again.
+ Pani Poni Wiki / Google