Well technically you can. Like if I want to save my home address as a favorite: I already have my wife as a contact, I go in and edit the contact and add the home address. So if am am lost and need to go home I can 1. go to the contact and pick navigate from the contact, which appears after you add an address. Or 2. once you contact has an address when in the maps in the search you type your contacts name and the address gets pre-filled. I guess we are not usto useing it this way but it makes a lot of sense. We are not usto having all our contacts on our garmins or tom toms but on the phone if you just put their address in under contacts its just like having favorites. Any how I like the navigation more than my current garmin.
I've never owned a Garmin or any other GPS unit besides my Droid and this is exactly how I use it.