Re: Google Chromecast
The big advantage of the Chromecast compared to any other setup which you may have is that it is small enough to take anywhere and take over any TV you have access to. All you need is a wifi network to connect the Chromecast and any device on the same network can use the Chromecast so it does work at hotels, bars, your house, a friends house.
If you already have a nice setup in your entertainment room like a HTPC, Roku, Apple TV or any other media streaming device, you would not need the Chromecast if that is the only place you view content