While visiting my family in Japan, one of their friends gave me a Daruma Otoshi toy, which is made of up of stacked wooden cylindrical blocks with a hole through the middle of each and a head on top. When lined up correctly, the handle of a hammer passes through the whole stack, for convenient storage. To play, you take the handle out and attempt to knock the bottom cylinder out while leaving the rest of the stack standing. Supposedly you should be able to repeat this, removing all of the blocks and leaving only the head standing. I've yet to see anyone do this succesfully.
Several of us made an attempt again last night, though, when we had some friends over after juggling. The plan was to watch a movie ("the Beat my Heart Skipped"), but we never quite got around to it.