I use "Epsilon" which is an EMACS clone made by Lugaru. I learned the original EMACS (which was a full screen editor for the DecSystem 20 at CMU) back in college and Epsilon is an excellent clone of it (it's dramatically faster than GNU Emacs).
@Charles: I had a blast, so much fun.
Oh and I want to be clear and not take the credit (the video makes it sound like I did more than I actually did): The problem I talked about at 4:30 or so was solved almost entirely by the media folks, I was just tangentially involved in the solution. I really messed up in the video.