Ed Glaeser has a new book out "The Triumph of the City" which should make interesting reading for those of us who are fascinated by cities.
The NY times has a book review which will give you a flavour of the arguments.
You can also see him on the Daily Show (although, unfortunately, I can't find a legal link so you'll have to wait for your next trip to the US or ...)
If you are in London, and interested in seeing Ed talk about his book in person, he'll deliver a public lecture at LSE on 14th March.