"Portscanning Low Earth Orbit" http://www.summercon.org/presentations.html#orbit, lots of overlap with this post, but we also learned how to pronounce appalachian.

This is the first you have heard of Mr. Goodspeed?[1]

I scoff at you, sir.

[1] See http://goodfet.sourceforge.net/ for one famous project of his

It was on this exact blog post. But just to hear him tell the story of how he built this thing in his words was incredible.