Another Malc video, this time he is talking at Pop!Tech 2008 about his book about genius, Outliers (there's also a Pop!Tech talk of his from 2004 discussing the Blink material).
In Outliers he talks about the "10,000 hour rule" for becoming an expert in just about anything, made famous in a 1993 article "The role of deliberate practice in the acquisition of expert performance" by Ericsson, Krampe, Tesch-Römer (Fresno State people can click here).