The Weekly Standard draws our attention to this study of parking tickets racked up by UN diplomats that go unpaid because of diplomatic immunity. The authors find a close correlation between the frequency of parking ticket violations and the level of corruption in the home countries (as measured by several international indexes of corruption). Egyptian diplomats, for example, racked up more than 16,000 unpaid parking tickets between 1997 and 2002.
Gotta love that UN. What was it Lyndon Johnson said about that august body? (Answer in comment thread.)