Google Earth + Aeronautical Charts + 3D Airspace = Uber Coolness

Link: Overlay Sectional Aeronautical Charts in Google-Earth

This is awesome. The nice part is that this also includes terminal area charts and flyways. And though the presentation is a bit rough, they also used Google SketchUp to do 3D representations of Class B airspace which really helps visualize that whole upside down wedding cake layout:

This is Las Vegas' Class B airspace looking northwest. The green areas are the restricted airspace areas of the Nellis ranges that are from the surface to "unlimited", hence their height compared to the LAS Class B airspace.

Not all of the restricted airspace is present, but the major ones are from a quick review. It only covers the US so far.