Our kittens, this might surprise you, have been cute lately. One of their tricks is to run in big circles in the living room, in opposite directions, until they attain maximum velocity, at which point they crash into each other, producing a ferret and a Republican attack ad. We call this the Particle Accelerator Trick.

So you can imagine how intrigued I was to read this which I found here on Brian’s blog, which he found here on Neatorama.