Lambda the Ultimate

I just came across this and thought it might be of interest to LtU readers:

http://openendedgroup.com/field

It's a hybrid textual and visual programming environment developed by the MIT Media Lab, with some pretty interesting ideas. For example: you can arrange blocks of code visually and scrub over them with an execution marker; you can embed bits of code which execute inside other applications; and it can show graphical representations of values.

Any thoughts?