Scotese.com is a cool site with maps of the Earth from all the different epochs. The Earthas been around for a LONG time, so you might be surprised how much it has changed.
Make sure you browse the maps in the Earth History section. Unreal. The animations were a little disappointing to me, but I watch too much Discovery Channel to begin with.
Below is 150 million years in the future, where Los Angeles becomes a sub-urb of San Fransico and Australia and Antartica merge together. Check out out the Mediterarnean Mountains in the Future World, once Africa and Eurasia collide. Crazy.