Great use of the Photosynth technology; it's visually please, pretty fun, and possible educational! Sounds like a triple play of awesome from where I'm sitting.
I point this synth out for different reasons than a lot of the synths I highlight. I love this synth, because it takes the concept of "...and here's my room/living space/blah" and makes it more interesting. The title of the synth + the bears holding weapons, squaring off across the couch, add just the right touch.
Bryce Canyon is one of the most beautiful places on the planet; this synth captures a lot of the tranquility and serenity that the area invokes. I'm interested in where these photos were taken, as the coverage is good enough for a pretty awesome point cloud.