This deal has expired!
The Google Maps Navigation Beta
is now available in the Canadian Android Market after being initially released a few months ago internationally. In essence, it's free GPS software that turns your Android-based phone into its own Internet-connected GPS complete with turn-by-turn directions, voice search, traffic, streetview, and much more. You will need a data plan with your phone to be able to take advantage of these features but you can't beat free GPS software!
It's actually included in the Google Maps application so just search for 'Google Maps' in the Android Market.