I've been doing more looking for topo stuff as of late. There are some pretty good sites out there - many only of the U.S. tho. In any event, Microsoft has one too! Its pretty sweet. There are various different types of views including relief, topo, and image. I'm including a sample of a relief map (6 images that form the larger image). You can access the site at http://terraserver.homeadvisor.msn.com/default.asp. Enjoy!
Interest: in no particular order...
* hiking / backpacking
* messin\' with computer stuff
I've seen this before - it's pretty sweet.
You can actually zoom in to a resolution of under 5 metres in a lot of areas. (That means you can make out things that are 5m or larger.) I was actually able to zoom in on my house last time I visited terraserver.