(Not my app, just sharing)
Check out Satellite Eyes, a cool app that uses the location feature of your Mac to load maps on your desktop.
http://satelliteeyes.tomtaylor.co.uk/
Here are some screenshots of it in action on my MBP, using the watercolor effect:
Check out Satellite Eyes, a cool app that uses the location feature of your Mac to load maps on your desktop.
http://satelliteeyes.tomtaylor.co.uk/
Here are some screenshots of it in action on my MBP, using the watercolor effect:

