Yennie - nice presentation! I'm impressed!
One slight "correction" though (and you might have covered it in your talk, of course, but just not specifically mentioned it on the slide...)
Slide 22 is described as an example of "Panel Coordinate Error" ... but this can actually be used as a _feature_, to produce 3d effects, for example. Here is an example where I use non-rectangular greplay panels to display several gmaps (floorplan maps) on the same page, in such a way that it has a "3d" look:
http://robslink.com/SAS/democd16/drink_cocacola.htm