Google Video

Turns out you can search TV. Google Video is a new service that allows basic searching of TV programs broadcast on a few channels since December 2004.

Right now, it searches the closed-captioning data and can display still images of TV programs, but doesn't seem to offer a way to watch the original program. Still, this is a neat proof-of-concept if nothing else and I'm sure more channels and content will be added down the road.