Radiant City is as described in the trailer — oddly disturbing, strangely amusing, and sadly illuminating:
A terrific movie. It features planning guru/God Andres Duany and dyspeptic sprawlhater James Howard Kunstler (in a strange and hilarious tie that looks like he slept in it for a couple days) intoning, in a reasonable tone, some of their most on-target slams on sprawl and the suburban paradigm. It includes lots of "fun facts" about the suburbs, including one or two from Alan Durning’s book The Car and the City.
Not quite up to Errol Morris standards, but really, really good documentary.