For all you photo junkies out there.

Forgive me if you've seen this before.  (Forgive me more if you've already linked to it here.)  I found #31 fascinating, but I can't decide which is more interesting: the new angle on Tank Man or the rapid response revisionist whitewashing end bucket loader.

The 40 most powerful photographs ever taken.

WARNING: The story behind #31 comes from the New York Times, so all the usual caveats apply.  Also, while I can't speak to the veracity of the photos, judging from the comments, one or more pictures may falsely portray the actual event recorded.