In the US, I'd like to see California, Hawaii, Alaska, and Louisiana. Las Vegas might be neat to visit once, just to see how whack it really is.

Outside the US, I'd love to go to:

The Bahamas
Other Caribbean countries
England, Ireland and Scotland (again)
France
Germany
Austria
Belgium
Spain
Italy
Greece

I think that's about it... Japan might be cool but going someplace SO different from home sort of scares me.