I love this from the BBC 4 series the 'Joy of Stats'. It's a shorter version of the Ted Talks that Hans Rosling, expert on global health, did in 2006/07 (worth watching if you have time). A wonderful example of how data and statistics can be presented in a way that is both compelling and memorable. I will never think of the differences between the so called 'developed' and 'developing world' in the same way again..