The Google Video Beta is now live. It's not, for the moment, to find a movie to see it on your computer like the also new Yahoo Video, but more a way to search the transcript of the programs on air recently (about 2 weeks as I can saw). It's also a way to see when your favorite program will be on air.
It can be also a good way to see the hot news of the past days and where it was been on air ;-)
Here the About page of Google Video.