Another awesome feature (should it be gradually made available for users globally) that has come to light is indoor Bing maps on Mango. Thinking about going to a nearby shopping mall, but can't be bothered to visit the website and check the map? Soon your Windows Phone might be able to lend you a helping hand.
Mango will feature Bing indoor maps so users can view the insides of locations and buildings - stores in a shopping mall for example. Unfortunately this is still in apparent early stages, but I can't think of another smartphone off the top of my head that features this unique functionality. There's also a button in the top-right corner that allows you to switch between levels in multi-story buildings/locations.
Here are some indoor maps that Microsoft has added to the desktop version of Bing maps. What do you guys think of this feature? Neat, eh?