
Here's a fun one: controlling your LEGO robot via the Internet alone is just passe'. Nowadays, you can use the Internet, but you have to be able to do it with your mobile phone.
So, here's my concept: I'm a GeekDad, picking up the kids at school, and I want the snacks ready and waiting when we get home. I pull up my TeMo control on my cell (once they've ported the web-app to the iPhone, if course), and give little Robby the appropriate commands, and when we arrive, voila'!