We know he went to Cornell, but on season eight of The Office, we'll learn who paid for Andy Bernard's education there.

Sources confirm that Stephen Collins has been cast as Andy's father, as the former Private Practice/No Ordinary Family star himself Tweeted this week that the cast is a “ridiculously fun & talented group, including @Rainnwilson who I worked w/in his 1st job in ’89 in the Park.”

Meanwhile, Dee Wallace (ET, Detroit 1-8-7, Law & Order: LA) will come on board as Andy's mother, as first reported by Entertainment Weekly.

The Office, and new Sabre CEO James Spader, returns on Thursday, September 22.