Here are some ideas I personally thought of. 1 have a HDD, 2 Have a coaxial port for cable/sat and Antenna, 3 be able to connect to a PS3 or Box 360 (no failure example like play TV in Europe and Australia), 4 have a custom port for RAM, 5 software for videos/Internet TV DiVX, TVU, Real, TVeircity, Video LAN ect.
I would like to see some comments or anything you want to have on it as well.