There are bunch of alternatives to TV but soon you can now get it all through companies like Google and Mac.
Macs Soon to launch iTV
This will eventually destroy the television side of the cable and satellite industry, as your only requirement to access these on-demand stations will be an internet connection. At $99 your family and friends will have an iTV. The iPad will be the preferred input device for the iTV. You’ll be able to editing videos, control games, and extend the interactive television experience.