Geographic Search Engines

• Google Maps - the first of these that offered a satellite view of any part of the earth. You can use it as a map, get directions or search for web listings in a certain geographical area.
• MapQuest - my personal favorite for mapping and directions - and getting better all the time.
• Yahoo! Maps - also getting better all the time. I find the ads more annoying though.

For a more complete list of search engines, see Wikipedia's article. Another good article, written by Danny Sullivan in 2004, can be found at SearchEngineWatch.com.