Twitter Vision is an excellent Google Mashup which allows you to watch real time tweets on google maps and if you be intrested to make your tweets availble there its one step registeration using twitter account and adding your location.
There are 2 mods as the title says on Plain Google maps and on 3D earth maps. I can bet you will be tried either moving your neck left and right or just your eyes rolling over 3d Tweets. Check out the Gif images and try Twitter Vision
Check out more in our collection of Twitter Tools and if you are looking for twitters around you and your area, try Tweet Local, Cool way to find twitters