Will Windows Phone 7 Series be able to do this kind of thing? We’re not sure, but take a look at how a tiny little Zune HD can power a nice big high definition television when connected via an HDMI cable and the Zune HD A/V dock. Unfortunately, when the Zune HD is connected to a big screen TV, the interface is simplified a bit and you don’t get access to your applications, internet, marketplace streaming, or social features. Still, being able to play 720p video is pretty cool.