New York City Subway Map Printed Tights. Not sure if these are geeky, but I LOVE them.
Sean Hartter has designed this notional Joker-brand cereal box. He notes that his FB friends quipped, "Why So Cereal", "You wanna see a Trix?" and "Whatever doesn't kill you simply makes you eat more delicious cereal"! Spend some times poking around on Hartter's site. He's very good at this sort of thing