Japan has had them for years. They may have tiny livings spaces (like Geni from Aladdin), but they have cool stuff. For instance, let's say your alarm goes off at 7am. Your toilet seat will have started warming about two minutes before, your coffee brewing, the temperature of your bathroom goes up so it isn't cold when you step out of the shower.
Now let's say you get home around 6:30. You give a call home to activate your house. Your soothing bath will start running at exactly the temperature you want, the roast you put in the oven (I know, I know, they don't eat roast but humor me) starts heating up, and the radio clicks into some relaxing music. You walk in and push a particular setting for your lights, and the house's lighting switches into dim and romantic. The only thing you have to do is get in the tub, and set the table. They are gadget freaks.
Oh, and I wasn't kidding about the toilet seat.