This is pretty cool - Podzinger [podzinger.com] has added a tab just to search YouTube videos internally. It doesn't take you directly to the spot where your search terms occur - you need to watch the whole thing. Still, it's a very nice expansion to their offering.
...we recently worked with the Associated Press to make all of their podcast material searchable on PodZinger! In other exciting news, we have leveraged the huge amount of user generated content on YouTube by making it searchable on PodZinger right from our home page.