I found a few more, but I they are a bit different than the 1st link, though along the same lines of Trick perspective. Would have been much cooler with the actual photos there, which I am sure they used to align the shots.

http://englishrussia.com/2011/05/13/back-to-1945/

http://englishrussia.com/2009/05/11/...ow-and-then-2/

http://englishrussia.com/2009/05/04/kiev-now-and-then/

http://englishrussia.com/2009/01/26/2235/