Yes. I get turn by turn voice instruction with Google Navigation. Just before I reached my destination, Google showed me a view of the entrance to the driveway - cool.

By the way, I watched a video of the at&t Navigator. I was quite impressed with the extra convenience of the Navigator. But that would be $10 extra to use.               

I don't get routed around heavy traffic with Google Navigation as far as I know. Maybe the $10 fee of the at&t Navigator is partly for the traffic update and rerouting, and partly for the enhancement of features.