So my PandaBoard finally arrived yesterday. Got it up an running on Ubuntu almost disappointingly easy. There's not much to show at this point: it's a computer! Like pretty much every other computer purchase I've made in the past decade, once you turn it on it is pretty much exactly like all the others. It did freeze up in the middle of an attempted upgrade to Natty Alpha 2, so I'm now starting over with a fresh image on the SD card.
It is small, and you can check to see how hot it is by putting your finger right on the CPU (not recommended).