Proudly from an un-PC major..

Mankiw links to this piece in Inside Higher Ed, ranking majors by the prevalence of PC-ness (definition within). The conclusions are pretty non-shocking, like:

Humanities and social science fields tend to have higher politically correct rankings, while professional and science disciplines do not.

Mankiw summarized some of the most-PC and least-PC majors as follows (yay CS):

The most PC: Psychology, Sociology, English, History, Elementary education

The least PC: Criminal justice, Economics, Marketing, Accounting, Computer science, Biology, Finance, Management information, Mechanical engineering, Electrical engineering