SproutRobot sends you seeds and tells you when to plant them (via TechCrunch):
It’s no secret that home-grown fruits and vegetables are usually really good, handily beating what you’ll find lining the aisles at your local supermarket. But If you’re like me, gardening has always seemed like something of a dark art — you put seeds in the ground, add water, do some other stuff, and a few weeks (or months?) later you have some tasty fruits and vegetables.