You also should remember that S-Video degrades quickly over moderate length. There is however several S-Video amplifiers to allow you to accomplish longer runs.

If you're building a house I'd realistically run anything you can think you'll use. If you run a span of the "standard A/V hookup" to one point in the house you can hook it into a receiver or a/v switcher to allow you to send anything you wish to the TV. You may also want to run Cat 5 computer cable for either a computer or for running IR or other control systems.