The Imaginary World has a collection of photos of people shopping in a supermarket of yore: Link
One of the photo showed: Food-o-Mat, maybe that's where Futurama got it from!
Tokyoflash Treasure Hunt - Win a Tokyoflash Watch of Your Choice!
Going on right now: Tokyoflash Treasure Hunt #26. Win a Tokyoflash watch and neat stuff from the NeatoShop. It's fun and easy to play: Link