I've always got a coffee/lunch/dinner date with someone and absolutely no preference as to where we meet. I need a Random Number Generator for food. Perhaps it could pull from the Yelp API. In a perfect world you can narrow your search by proximity to an address, keywords (lunch, Chinese), and open hours.
Dine-O-Matic, Wheel of Lunch, and A Place Between Us all exist, but suck, because they appear to draw from the same 10 restaurants.