If I had to pick the critical technology for the 20th century, the bit of social lubricant without which the wheels would've come off the whole enterprise, I'd say it was the sitcom. [...] For the first time, society forced onto an enormous number of its citizens the requirement to manage something they had never had to manage before—free time.

And what did we do with that free time? Well, mostly we spent it watching TV. [...]

And it's only now, as we're waking up from that collective bender, that we're starting to see the cognitive surplus as an asset rather than as a crisis. We're seeing things being designed to take advantage of that surplus, to deploy it in ways more engaging than just having a TV in everybody's basement.

Gin, Television, and Social Surplus, April 26, 2008. (video of the talk)