This is a clip from a talk at TED (Technology, Entertainment, design) given by Michael Shermer [wiki], the founder of Skeptic Magazine. At around 3 minutes mark, he showed a clip about perceptual blindness (the basketball pass experiment) and even a clip from Katie Melua [wiki].
It's worth watching: Hit play or go to Link [YouTube] - Thanks Sherzod Agzamov!
Update 12/4/06: Hanan of growabrain gave us another link to the white shirt experiment: Link
And I loved the new version of the Katie Melua song! :-D
That alone alerted me that something was amiss, and my attention refocused into looking for what it was. Without that outside cue, I'd have completely missed him.
By the way, I counted 17 passes.
The video is STILL AVAILABLE through a link here: Experimental Pschology: Human Perception
The human mind is amazing!
Jeff