I'm contemplating a similar retrofit to my house. I'm planning on 3 cables into each room: coax (for TV) and two cat 5 network cables. One of the network cables I'll split to have two 2-line telephone outlets. I want to run the other ends all to a central point for distribution of the various services. This will give me the flexibility to move my home office into a different room in the house as the family grows.

Besides being useful for me right now, I figure it'll also be a good selling point when the time comes to sell the house.

--Peter