Mapping Nuclear Verification
Kick My Habits. How Much Could You Save?
An interactive "game" that shows savings from avoiding habits like smoking and eating out.
Column and Veil
As a website, this is a little annoying (you have to click on all the items before you can proceed). But there are some good ideas for learning design.
SPENT
Interactive poverty simulation.
How To Fight A Bear
A very well done simulation that teaches you what to do if you encounter a bear.