This site provides a free physics textbook that tells the story of how it became possible, after 2500 years of exploration, to answer such questions. The book is written for the curious: it is entertaining, surprising and challenging on every page.
remaking the classic 1984 arcade game Marble Madness by Atari. The graphics are slightly enhanced to bring them on par with modern standards: there is now a full 3D mode in addition to the usual isometric perspective one
a runtime verification tool used in testing applications for compatibility with Microsoft Windows XP. This tool can be used to test for a wide variety of known compatibility issues while the application is running.
takes a two-dimensional image and creates a three-dimensional "fly around" model, giving the viewers access to the scene's depth and a range of points of view.
The NOVA mini-series The Elegant Universe, watch all three one hour episodes here, divided into chapters, available in the QuickTime or RealPlayer plug-ins.