The Dean is mocked by the group for schilling "Let's Potato Chips" as part of an endorsement deal. This fictitious brand of chips can be seen on many other shows, including Arrested Development, Orange is the New Black, New Girl, The Middle, 2 Broke Girls, My Name is Earl, Ugly Betty, Switched at Birth, The New Adventures of Old Christine, Sons of Anarchy, and--of most importance to Abed--Cougar Town.
In the cafeteria scene where the Delta Cubes pull Dean Pelton's pants down, he is wearing orange and blue striped boxer briefs. This is the exact same type of underwear that Jeff wore in the episode where he played pool in his undies (Physical Education (2010)).
On IMDb this is the lowest rated episode of the series.
At the scene where Troy and Shirley are picking team members, the classmates are named after former writers of the show.
At the end when Jeff & Pierce are speaking at the barber shop, Chevy Chase says: "You know one sport I never got? Golf! I've belonged to dozens of courses in my life but never played..." An obvious play on his role as Ty in Caddyshack (1980).