I went to Comida last night. Las Iguanas was the Brazillian stop on eat your way around the world in London back in 2006, but this is quite a different proposition.
It's a churrascaria, a restaurant serving grilled meat, and in this case offering as much as you can eat: the waiters move around the restaurant with the skewers, slicing meat onto the client's plate. This serving style is called espeto corrido or rodízio.
Hugh, whose idea the visit was, discovered the concept in Richmond, Virginia of all places.
Good company and friendly helpful staff, this is one to visit again.