It's just an adapter box... got it at best buy. It links your TV and all other kinds of stuff with the internet. You can surf the web and stuff all on your TV.
If you have a DVR, you can manage all of your downloads and recordings from it... if you really wanna be hipster you can control all of your devices with your Android or iPhone.
I got this one..
Logitech Revue? With Google TV?
Sony makes one as well, but I already have a blu ray player so it wasn't worth the extra $150.