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
The video is STILL AVAILABLE through a link here: Experimental Pschology: Human Perception
The human mind is amazing!
Jeff
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.