Slow motion video from the 2011 Czech Flyball Championship: Athleticism, speed, caught balls, missed balls, clean passes, misjudged passes, and really astonishing streamers of drool. If you're wondering "What is flyball?", the short documentary What Is Flyball? might address that question. [more inside]
The Geometry of the Snail Ball [pdf] - an interesting article (with some DIY advice at the end) about a toy shop curiosity you may have encountered.