I picked up an Arduino Mega 2560 the other day. It seemed just the thing to drive the hexapod robot (Lynxmotion EH-3) I bought years ago and never finished. I've only written a couple of sketches so far but I'm going to be experimenting and schooling myself as I work on this project. If you're interested you can read about it on my blog (http://fredericahandrake.blogspot.com/). I'll try to post Arduino-related updates here from time to time. Thanks!