I just got this from Ze Frank's blog, I think it's a pretty good idea.
Firebrand TV: for those who get annoyed when their ads get interrupted every 5 minutes with some kind of TV content. Its in the beta version but working well for what I've seen. I just had a look for 2 minutes, I don't know how big their ad portfolio is, but I bet it can grow very quickly. I like the fact that they give the details about the agency that realised the ad and there a few cool features, like you can select a brand and watch all the available ads for it, etc.
Worth a look!