I shouldn't have to unlock my garage; it should identify my car by the same way my car identifies my keys as soon as it gets within range, and open automatically.
The TV should only turn on if "watching TV" is what's on my web-published calendar for the rest of the night; otherwise, it's just a distraction that might suck me in while I'm trying to do something else. If my calendar says "create presentation," though, by all means fire up Keynote just in time for it to be ready and waiting to receive my input.
My favorite songs can already follow me from my living room to my kitchen--I have very loud speakers. I want them to follow me from my car. Either by a pair of cooperating satellite radio devices, a pair of 4G devices streaming from my online music library account, or more likely just an MP3 player that, upon being unplugged, scans for wifi audio speakers to start streaming to (with the possible optimization that if it finds the computer it syncs with, it can just command it to start playing the track where it left off, then shut itself off.)
The phone should have already told me what it needed to tell me when it was in my pocket; however, now that I take my cell into my home, I should be able to answer the line of my cellphone's number on my home phone lines (without an additional plan, and perhaps cheaper because it doesn't have to connect to a cell tower but can instead ride my coax). My phone's (both cell and land, and perhaps work as well) e-mail inbox should be my computer's e-mail inbox. I should be able to use my cellphone as an extra screen, speaker, and microphone for any and all of my computers, both over Bluetooth and securely connected remotely.
My computers themselves should be able to intelligently know where I am, locking themselves when I'm not sitting at them, and unlocking when I sit down (unless they detect someone on the blacklist is also in the room with me--then I'll need to use a password.) They should wake up when they detect my voice (even from a different room, depending on what is said), just as if I'd moved the mouse or pressed a key.
I should be able to use my cellphone to send hand gestures to devices from anywhere, as if it was a Wiimote.
And the fridge really should have messaged me about the milk when I was in the store; that's why I carry the GPS locator, after all. It's too late now. Maybe it could message one of my friends who is planning to come over that they could do me a favor and pick it up if they're close.