I'm not much a developer, but I do enjoy tinkering with the Arduino in my spare time...
Anyways i did enjoy Justin's latest course for the ITP-110 exam. Hoping everyone else likes it and it will make a demand to make more :D.
if you haven't watched it go now to the library, the shows are nice bite size chunks so doesn't require a lot of time to watch.... Its a bundle of fun and I am sure you will want to see more :)
PS You did open up this bag of worms for me now that I have more time i been playing with my own Arduino whenever i have a chance...Now i know the development cycle to do it right :P