I just made a simple Android app, using the new Android 1.5 SDK (Cupcake), that will show your current location using GPS or Wireless Networks.

For GPS, you can also see number of satellites, as well as fix time. There will be an update soon to show more information about the satellites.

Check out the screenshots:

http://chrismoos.com/wp-content/uploads/2009/04/mylocationgps.png