http://upnext.com/ This is something I have been meaning to write about for a couple of weeks now. It's a new NYC-based startup that features a 3D mapping application. It' is basically a 3D map of Manhattan where each of the building can be clicked on for a description. You can find your favorite restaurant and some information about it or click it and then find bars (for example) in the area. Basically it is a database of the cities bars/stores/restaurants/subway stops with an extremely slick 3D interface. It's kind of Citysearch-meets-Google Earth. I found out about the site at the last Meetup.com NYC tech meetup (I went to talk to the Amazon AWS rep). I was pretty impressed at the time and have been playing with it on and off since then. The next day, at Widgetcon, I actually ran into a friend of the owner and we got to talk for a second, that was cool too. Anyway, I was impressed with it. You have to sign up to test it out, which is a bit of a hassle, but I thought it was worth the time (especially if you are fascinated with maps, like me).