I've had my Droid for about three weeks now. IT continues to amaze me. Yesterday I finally tried the GPS navigation. It did not let me down.
I found the interface to be simple, intuitive and effective. Not only did it get me where I wanted to go, It could go it while streaming Pandora and receiving phone calls. While on the phone, the navigation system spoke in my ear telling me to make a turn etc. Only I could hear the turn directions, not the caller. Nice! (maybe a little too loud though)
I'm sure all of you know this already, but i wanted to share my inpressions.