Google Art Project (http://www.googleartproject.com/) is essentially an in-class field trip to many of the world's most prestigious art museums. Using technology similar to Google's famous "Street View", users can actually move around the interiors of major art museums around the world browsing the art or select specific pieces from a dropdown menu. When a specific piece of art is chosen for viewing, the level of detail in the scans in truly unbelievable. Users can zoom in on paintings to the point where cracks in the paint look like canyons while maintaining crystal-clear resolution. A powerful tool for any class.