These running shoes by Adidas are actually a re-release. They originally came out in 1984. The current incarnation essentially includes a built in pedometer and timer to help you keep track of your running habits. Great if you are looking for an unusual pair of sneakers or can't stand carrying any devices while running.

The Micropacer Sneaker
Sneakers By adidas...$250.00
The Micropacer comes fully equipped with the microcomputer including the range finder and pedometer. Ideal for people like me who walk 20 plus miles a day.... (via ThisNext Blog)

comes with an integrated microcomputer including range finder, pedometer, and stop watch, in a shoe!