Every time I see a website like this I think "I really wish I had both the visual design and front-end engineering talents to make something like this happen". I have enough problems getting text to go where I want it to go and while I can read and understand Javascript I just have no clue where I'd even start going about getting, e.g., semi-transparent balloons with rounded corners as a rollover effect. That would probably take me a week to get right, after much copy/pasting.

I suppose that, somewhere out there, there is a front end engineer really wishing he could alter the Big Freaking Enterprise Web App backing his AJAX calls.