http://blogs.suntimes.com/ebert/photos-in-need-of-comment/-photograph-by-netchicken-nbsp.html
Very peculiar, but cool. I cant work out how easy the effect would be to replicate.
Should be just the same as a pano, but stitched the other way, you would have to do some 'specialist' tripod mounting thought!
I've done vertical panos before, just not gone "all the way" :D