Sure you can, but the idea is to not have to keep plugging in and pulling the plug. Do you have an iPod? You could just play your music from that laptop too? Do you have an iPhone? You could just make calls via Voip from that laptop too? Do you have a TV? You could just want television on that laptop too?TV is just another variant of a specialized bit of hardware that can be dedicated to the task of what it does... just like an iPod, iPad, iPhone, TV, radio, etc.
Ok thanks... makes sense. Just thought I was missing something else. I guess for $99 it's worth it especially if you don't have a laptop.