My new place is all C-Bus controlled (a home automation system - all the switches, movement sensors, light sensors etc etc) are simply connected via CAT5 cable and all the output relays, dimmer channels etc "programmed" for what does what).
I specifically set it up so each bedroom can have its power turned on and off seperately.
This works really well... we live entirely off-grid, but with an on-grid lifestyle - 42" plasma TV, dishwasher, LCD TVs in each bedroom etc....
However, little concessions - the 120 odd lights in the place are all either 7W or 11W FCLs instead of 50W halogens, except a few (like in walk-in-robes etc). The system detects a person moving and turns the lights on and off only when they are required - and then, only to the brightness required (if its already light enough, it doesn't turn the lights on at all!)
Arguably nicest is my 14YO daughter who is still comming to grips with "energe consumption" - finds that the system automatically shuts down her room when she has used her quota for the day! Boy was I popular when that first happened (NOT!)
Other nice things - we had guests, who found that they had to have the bathroom lights on AS WELL AS the heat-lamps. DUH! However every time they turned the heat lamps on, the system turned the bathroom lights off! While technically savvy, they are not energy savvy, and came to tell me of a "glitch" in the system. Looked all sheepish when I explained the logic!
We also have the system set up to preferentially run certain loads when there is plenty of power - for example, the bore pump only runs when we have spare power from R.E. OR if the tank is getting low.
Think about it and you will find all sorts of ways to make your life easier and use less power, I'm sure