Where am I is an application to tell you where you are. It's simple! There are two buttons - one to tell you your current coordinates, and one to tell you your current address. Your location pops up in a notification window.
GPS must be on on your device. If it doesn't work the first time you press it, press it again(not sure why that works, but try it!)
***PLEASE NOTE**** It does NOT work well if you're moving very fast(a car, for instance)
Updated to scale to tablets