What people are celebrating is a combination of things. In part they are recalling the joy of going to the movies. Nostalgia concentrates the scattered feelings of goodwill from the past, making it a heady potion that we love to wallow in. Watching an old classic brings to the fore memories of what films used to mean to us. The joy of cinema has nothing to do with the quality of the theatre, the effectiveness of air-conditioning, the comfort of the seats and the price of the popcorn- it has to do with the vital feeling of being spoken to in the deepest possible way.