The 3D OpenStreetMap World of New York

CubicPower appear to be creating a 3d Doom type game world from OpenStreetMap data. CubicPower's New York Maze map is a series of thousands of small block size 3d maps of New York locations, which you can explore using your keyboard. The CubicPower website doesn't appear to have any information about these 3d maps. They appear to be made with a WebGL powered 3d engine, with OpenStreetMap map

New York Snowfall Reports

An interactive map with snowfall reports in New York area. http://project.wnyc.org/snowfall-map/embed.html#9.00/41.1293/-73.4160

Noisy New York

CartoDB has released a really great mapped visualization of 311 noise complaints in New York. The map allows you to explore the number of complaints made to New York's non-emergency service hotline by location, time of day, type of noise complaint and by season of the year. The Noise in New York map starts with a very useful introduction which guides you through some of the filtering options