 Stephen Colbert guest starred in the Halloween episode as Broccoli Rob , a former member of Here Comes Treble , Andy 's a cappella group . The episode " Lice " guest starred Julius Erving playing himself as an investor in Jim 's sports marketing business . Former NBC co @-@ chairman and The Office executive producer Ben Silverman had a minor recurring role as one of Jim 's colleagues . He appeared in the episodes " Here Comes Treble " , " Suit Warehouse " , " Customer Loyalty " , and " Moving On " . The fourteenth episode , " Junior Salesmen " , featured several guest stars . These included Eric Wareheim as Gabor , Matt L. Jones as Zeke , and Will McCormack as Wolf . In the episode " Promos " , athlete Ryan Howard played a version of himself . Comedian Roseanne Barr had a two @-@ episode arc as a talent agent named Carla Fern , and first appeared in the episode " Stairmageddon " . Michael Imperioli guest starred in the episode " Livin ' the Dream " as Sensei Billy , acting as a foil for Dwight . The episode " A.A.R.M. " guest starred Aaron Rodgers , Clay Aiken , Mark McGrath , Santigold , and Jessica St. Clair , all playing themselves . The series finale guest starred : Rachael Harris as Angela 's sister ; Joan Cusack and Ed Begley Jr. as Erin 's biological parents ; Malcolm Barrett as Stanley 's replacement ; and Bill Hader and Seth Meyers as themselves . 
