Wind-Up Knight is a fun little game that has a good balance between being challenging and visually stunning. I have only gotten started on the game and tried out the first couple of levels, but it has been a lot of fun. It is a side scrolling game, that quickly increases in difficulty. As you move along you can add swords, shields and the hazards are increasingly more intense.
Here is where you download it in the Android Marketplace: Wind-Up Knight
Here is a video that walks you through a couple of initial reactions to the game:
Give yourself a little distraction... Try it out today!