When his parents ask him about his major, Barry says he's "leaning towards undeclared. David Krumholtz would later appear in a couple episodes of_"Undeclared" (2001)_.
One of the shows Peter lists in the beginning that was canceled during Family Guy's hiatus.
The apple bong was referred to in the pilot episode of Undeclared, which was created by Judd Apatow. Also, Gerry Bednob played a similar character in Undeclared.
Amy Sedaris mentions the title. A still is shown.
Brett says that John Hamburg wrote and directed I Love You, Man (2009) as he wrote Undeclared
Title is referenced
Mentioned by Chris Hardwick when introducing Charlie Hunnam. Hunnam later answers a video question about his memories of working on the show and with Judd Apatow.