January 7, 2013
Returns 8 p.m., Thursday, Feb. 7
It's been a long time since season 3 ended with Jeff winning a Shirley/Pierce lawsuit in such a way that everyone learned the value of friendship (and of not chopping off hands). When season 4 finally begins, it will be a new school year with new classes (History 101). Also, there will apparently be men dressed like unicorns.