I agree that the Old Spaghetti Factory and Ed's are great places. The Organ Grinder is also fun.
But my absolute favorite would have to be Movenpick. Actually, this restaurant is part of a group of restaurants-the Marche restaurants.
Movenpick is set up like a marketplace. You go around and pick what you would like, and get a stamp on a card for every item you choose. It is a Swiss restaurant, so you will find choices from Italian, French, and German foods. All are made to order, right in front of you.
The only drawback to this place is that there can be a long wait for a table.
I don't have the exact address of Movenpick, but I know that it is in the same building as the Hockey Hall of Fame.