Book: Rejuvenile: Kickball, Cartoons, Cupcakes, and the Reinvention of the American Grown-up by Christopher Noxon
About: Lives of "rejuveniles" adults who won't "grow up". Grown up kickball leagues, mommies skateboarding groups, doll and toy collectors as well as Disney World aficionados are all profiled.
Pros: Accessibly written, wonderfully varied and thorough profiles of members and subgroups of the rejuveniles. References listed in back.
Cons: I found Noxon's profiles, interviews, and presentation of the rejuvenile culture more interesting than his analysis of it.