Never really thought about doing this with N1 before but with Galaxy S having microUSB at the top of the phone, this might actually be a good idea! I just tried rotating the phone 90 and 270 degree and worked ok. But if I flip it 180, the Navigation app stays exactly where it is. Is there a way to "enable" this? Unfortunately, my auto charger is barely long enough to connect the phone with the connector at the top of the phone and my charger has a loooong cable!