In-Wall Touchscreens for the Home?

Black Perl asks: "I am planning a home automation (HA) system for a new yet-to-be-built house, and would like to have in-wall touchscreens in key areas around the house. However, the touchscreens in current HA products have ugly interfaces. Being a web developer, I know I could do a much better job if these ran web browsers in kiosk mode. Problem is, how can I accomplish that? Embed a PC in the wall next to the screen? Are there ways to extend video+input cables down to a rack in the basement? Any other ideas?" Interesting idea, and more aesthetically pleasing than the more traditional alternatives. Maybe some of the solutions, mentioned in this earlier question on LCD screens, may be a step in the right direction.