We went there last night for a nostalgia trip.  I went to Dan & Louis' in 1962 and it looks exactly the same in 2007.  The difference is that at age 17 you don't notice the terrible service, mediocre food and high prices (probably because someone else paid the bill).  We paid $32 for an iceberg lettuce salad with a lemon slice that had inadvertantly fallen into it, a glass of wine, a diet coke, a cup of clam chowder and a bowl of clam chowder.   The waitress didn't provide napkins or table service.  The food took 20 minutes to arrive at our table.  It couldn't have been because they were too busy, because the place was only 1/3 full.  I'm really suprised that they're still in business.  I guess I'll wait another 45 years before I go back.
Pros:  Nostalgia
Cons:  food, service, prices
                        
more