I found that people like blogging about such niceties and subterfuges, so I'll do my part:

Scale of the Universe

Simply awesome. It goes down to sub-atomic particles and up to the edge of the known universe. You can click on things too and find out a bit about them.

7 Billion and You

Find out your number among the 7 billion people in the planet. It also provides interesting demographic details.

Well that's it. They were simply...