I don't usually find the NY Times good for much, but these interactive overlay photos of Japan "before and after" are terrific. Move the line in the middle from right to left to see the effect.
http://www.nytimes.com/interactive/2011/03/13/world/asia/satellite-photos-japan-before-and-after-tsunami.html?nl=todaysheadlines&emc=thab1
"I don't usually find the NY Times good for much".
How could you? Your much to Advanced and Conservative for that publication! :))