I wanted to mention this application I recently came across, it's called MapDroyd and it uses maps from the openstreetmaps project.
http://www.mapdroyd.com/What's cool about it is that it's simple to use, you can view maps offline, it can download maps automatically from regions,
it can rotate maps and will show a little red x where you're at, so if you just need a simple way of navigation around in the streets, this is worth a look:)
I should also mention that you need to install ContentDroyd along with MapDroyd for downloading capabilities.
--
http://jonkristian.nohttp://divineintervention.no