One of my favorite aspects of being at YouTube is the ability to reach back into Google and integrate with their products. Several have already been launched including a layer on Google Maps which allows you to see recent geotagged uploads to YouTube plotted on a map [go to google maps, click on MyMaps, click on 'add content,' select or search for YouTube videos].
Today the Google News team integrated embedded video from several major news agencies to add another layer of info to their service.
What's especially cool IMHO is that these integrations don't necessarily make use of any special tricks - anyone with a similar service can (or soon will) be able to do the same using YouTube's APIs. In fact, I hope you do! :)