I've used Skype on my TV and am disappointed that they're doing away with support for it.
The TV is an LG with the Skype app built into it. I then have an HDMI camera hooked into it so we can conduct Skype calls with long distance family members from our living room with the entire family - not just a single mobile device wih people crowded around it.
It worked great but once again MS is killing something unique to its platform.