Some Linkies –
powers of 10 – See Earth from 10 million light years away, then zoom closer and closer until you reach the planet and being to zoom into a leaf, then the cells of the leaf, ending up looking at a proton. A very neat Java applet.
The Blue Marble – Ultra-high quality pictures of every square kilometer of the Earth’s surface. These pictures (and videos) are huge and beautiful.
Critical IP sucks.