Buy a good laptop (on sale) that has HDMI output and wifi, connect to your wireless router and then plug HDMI cable to tv (most newer tvs have hdmi)...surf the net, watch tv online etc on your big tv. You can also take the laptop outside, the garage etc. and still surf and watch tv online! Originally I bought Sony Internet Player with Google TV box...big POS. I returned it to Fry's after two weeks, I couldn't customize the built in Google Chrome browser, no Adblock etc., built-in wireless was weak, just plain sucked and at price fixed $199.99, I could buy laptop on sale for a couple hundred more.
Bottom line, forget all the boxes and buy a laptop.