He's a computer.
I'm talking about I Want Sandy, which keeps track of your todos, your calendar, and various other things. There are still some features that I'm looking for--both sending and receiving tasks via Twitter, for one; customizing "Sandy"'s look (as far as I'm concerned, my Sandy is Aleksander, a hot Eastern European dude) is another. I expect lots of mashups and add-ons to rise out of this project, especially now that it's gotten a BoingBoing link. It just seems like such a cool productivity idea--so codeable, and yet the script makes it feel like you're talking to a real person.