It's like a Roomba for your freakin' lawn. Looks like we're getting closer and closer to a Wall-E type lifestyle (which I'm actually a little too comfortable with happening). The WORK Landroid (clever) Robotic Lawn Mower is a fully intuitive, automated lawn mower. It even automatically returns to it's charging station when it's battery is low. The Landroid ($999) has a built in anti-theft system that goes off when it leaves a programed boundary. Pretty nifty.
Check out the WORK website for more info.