I keep forgetting how cool TED.com is.
I was watching a few videos while the other half was watching a chick flick in the lounge room. (yes we only have one TV in our house and sometimes even that is too many).
And came across this little gem - http://www.ted.com/index.php/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html
Followed it up and went to his website - this is the coolest way to play with statistics I have ever seen. Click on Gapminder world and you can visually see a whole range of data and how it related to other data all from places like the UN and it's agencies.
OK so not strictly something that I would use on an interactive whiteboard but - well you can - each bubble is clickable and the whole graph is interactive. Actually it would work quite well with eBeam or a Wacom tablet now that I think about it.