Nathan's is a favorite of mine - I enjoy getting my lunch to go and have collected orders from coworkers on more than one occasion. A previous commenter mentioned that some soups are better than others, which I definitely agree with. You do get alot of hot soup for your money and their breads are VERY good.
The only complaint I really have is that it is only a take-out - there is no seating. Also, if you go for lunch during the week, expect to wait in line or avoid 12:15 - 12:45. The later you go the more likely they are to have run out of a certain soup or bread and your choices may be limited.
Pros: fresh, hot, tasty
Cons: to-go only, limiited supply