Recently in Object Recognition Category

What does this tell us about the validity of eyewitness identification?

http://feeds.latimes.com/~r/latimes/news/~3/Xr4lMLA9NBA/la-fi-mask-20101209,0,6731334.story

What is the Thatcher effect? What does the face below have in common with 'thatcherized' faces at the bottom of the page?

Source (http://www.psychologicalscience.com/cgi-bin/mt/mt.cgi?__mode=view&_type=entry&blog_id=29)

Image source(http://scienceblogs.com/mixingmemory/2006/09/cool_visual_illusions_the_marg.php)