S2, E12: THE STUDY GROUP DEBATES WHETHER TO ADD NEW MEMBERS - SHIRLEY REUNITES WITH HER ERRANT EX HUSBAND AND HAS SOME IMPORTANT NEWS - MALCOLM JAMAL WARNER GUEST STARS AND JOHN OLIVER REPRISES HIS ROLE AS PROFESSOR DUNCAN -- Annie (Alison Brie) returns from spring break to find that her crush "Rich" (Greg Cromer “Justified”), the Dr., has enrolled at Greendale Community College, sparking a heated debate about whether to add Rich and/or Senor Chang to the study group. Shirley's (Yvette Nicole Brown) ex-husband Andre (Malcolm Jamal Warner, “True Blue”) is back in the picture and Shirley has some big news for everyone. Joel McHale, Chevy Chase, Gillian Jacobs, Danny Pudi, Donald Glover and Ken Jeong also star.