Celebrate ‘South Park’s 20th with celeb skewerings

Getting mocked on South Park is a celebrity rite of passage, and one that a whole new crop of famous folks are about to experience when Comedy Central’s foul-mouthed, crudely drawn but sharply observed animated series returns for its 20th season Wednesday (10 ET/PT). To commemorate the occasion, USA TODAY’s Jayme Deerwester looks back at four classic celebrity satires.