I haven't had a chance to play around with Microsoft's "Deep Zoom" thing or Photosynth because I doubt either would work that well on my Powerbook G4 even if it was supported on pre-Intel Macs. But, Panoramio just released something called "look around" that does work on my computer. Google talks about it on its
LatLong blog. In a way it reminds me of the Photosynth demo.