@Eric:We're not quite yet sure on timing for KE code (there are still a few tweaks & bugs to fix). If you have a pressing need for it you can email our support team at k4w (at) microsoft.com to request early access.
Great post. I love seeing the LINQPad stuff and I had no idea that Notepad could do that! I will also share that we got our first remix on the Find My Champ app. See the video here: http://www.youtube.com/watch?v=VNavWr2MU1Q