The video highlighted an annoying feature of Squeak Smalltalk, where you get tiny little views of individual methods in their own window, which seems like a good idea until you actually try to do something complicated using it. It's pretty to watch though.

The cool things there, in my opinion, were the code navigation pieces. Those are the things I actually think work better with tabbed files.

In other news, yikes! I seem to have started an IDE vs. Text Editor flamewar. Sorry about that.

Those bubbles would have been a nightmare if they didn't relate to each other in such a clean way

They have some great grouping features - snapping, colouring, pushing, connections with lines, naming groups.

You get most of the same functionality by saving off Smalltalk images with meaningfully arranged windows. (Yes you can do it with debug sessions too.) But you have to keep track of the relationships yourself. The lines and groupings are genius.

This stuff is awesome. First time I've been this impressed by an IDE outside of Smalltalk, Self, or Symbolics, Lisp.

I also appreciated the fact that it linked called functions to their definition. g] is great in Vim, but it is easy to get a little lost in the navigation stack. Having g] intelligently pop out a new buffer window ala :vsplit would be a great start.

Awesome UX ideas to possibly implement in iPad app.