I'm in love with anything that is "Customised" or "Personalised" or "Tailored" to individual needs. This idea stems from that.
A restaurant that has a face recognition system at the main door - Recognises the person entering in [ not for first timers], alerts the doorman/waiter/manager about their preferred table location [ smoking/non-smoking, quiet corner ]. With information from previous visits, we can get their preference for drinks, short eats etc [ When the waiter greets you by name, asks if you want your fav drink, i wonder how many would refuse. Also, would love to see the surprised smile on the guests' face].
The waiter will have a PDA [ which arms him with the guests' preference for drinks/cuisine etc]. Imagine the guest asking for a pasta dish and the waiter suggesting that you had the same dish last time you came and offers a new dish to try out.
This restaurant will never be crowded and will have enough space for every group of guests, to have their own unique experience. It will also be a "green" restaurant, with usage of recylable materials and effective utilisation of "waste".
I would go around the dining area and greet every single guest, ask them about their experience and have a conversation and make them feel at home!
Oh yeah - If only, i dont have to make money out of this restaurant!! I wish.....