While it's true you can't boot up a potato, I'm guessing you could boot up with a bag of potatoes and a low-power laptop. Never tried it before, but I'm sure some intelligent person could power up a laptop with a good number of potatoes.

http://www.youtube.com/watch?v=ufoOJfzro2c

(damn, not only does this kid have my name, he looks like I did at that age)

Can you confirm Windows 7 will run on a potatoe? And also due to Apple's lack of lawsuit I think we can safely assume that potatoes are good enough for Apples design department.