The Volokh Conspiracy - Cool optical illusion:

"Motion Induced Blindness." (To confirm that the yellow dots are really there all the time, just cover two of the yellow dots and the flashing green dot with your hand, and look only at the remaining yellow dot -- it'll stay there indefinitely.) Thanks to Paul Hsieh of GeekPress, who has some more on this on his blog.

	[Eugene Volokh, March 15, 2004 at 2:15pm] Trackbacks Cool optical illusion: "Motion Induced Blindness." (To confirm that the yellow dots are really there all the time, just cover two of the yellow dots and the flashing green dot with your hand, and look only at the remaining yellow dot -- it'll stay there indefinitely.) Thanks to Paul Hsieh of GeekPress, who has some more on this on his blog.