I've been waiting for this bugger for a long time. Finally, after having being teased mercilessly two years ago in the Microsoft Seadragon video,Ballmer & Sons has finally released Photosynth for you and me to use at will. Thank the Big One (Many Ones if you subscribe to a polytheism and No One if an atheist).
If not in the know, Photosynth is an application and browser plugin that creates essentially 3D images from a collection of gathered 2D photos. Naturally, it's no good if the pictures are not of the same subject but let's say you go to Flickr and grab a load of people's holiday snaps of the Taj Mahal. Photosynth automatically puts them all together for you, with all the different angles and annoying tourists that got into the shots, and creates something rather incredible.