Google has posted many sessions from Google I/O, its annual developers conference held last week. I've pulled out a few that may help you broaden your audience, as far as attracting people watching their televisions, whether that be for your app or for your videos.
This one provides tips for building, programming and promoting a YouTube channel:
This one is for app developers developing for Android smartphones, tablets or Google TV, who want to incorporate high quality Youtube video playback:
This one is all about getting your content on Google TV:
This one is about bringing your app to the big screen:
Here are some interviews from the Google TV Sandbox: