Same here. I'm too much of a keyboard guy (and Dvorak, at that), so I've just been admiring it from a distance, but it has some great ideas.

Sam (http://en.wikipedia.org/wiki/Sam_%28text_editor%29) is also interesting, the vi to Acme's emacs, so to speak. Same with the various window managers styled after rio & 8 1/2, the filesystem, etc.