community easter eggs: #23 Daybreak
"Daybreak" by Michael Haggins is frequently featured on the show. The first time was in "Horror Fiction in Seven Spooky Steps" (S03E05), during Abed’s story. It also played in "Pillows and Blankets” (S03E14), on Neil’s radio program. The song is hummed by several characters throughout seasons 3 and 4 - Troy in ”Foosball and Nocturnal Vigilantism” (S03E09) and Virtual Systems Analysis (S03E16), Annie in “Urban Matrimony and the Sandwich Arts” (S03E11), Abed in “Digital Exploration of Interior Design” (S03E13), Shirley in“Cooperative Escapism In Familial Relations” (S04E05) and the puppet study group in “Intro To Felt Surrogacy” (S04E09) - as well as it is established as Troy’s ringtone in “Paranormal Parentage” (S04E02).
community easter eggs: #22 Danielle Harmon
In “Pascal’s Triangle Revisited” (S01E25), during the Tranny Dance, Dean Pelton announces one of the contestants to Tranny Queen as “Danielle Harmon”, a gender-swapped version of Dan Harmon. Later, on “Urban Matrimony and the Sandwich Arts” (S03E12), we meet a Danielle on Shirley’s wedding rehearsal. Even though it was coincidental, Dan established her as the previously mentioned Danielle, after seeing a fan theory on reddit.
community easter eggs: #21 Nice Sweater
In “Asian Population Studies” (S02E12), Andre mentions that his sweater was given to him by his father. Malcolm Jamal Warner, who plays Andre, also played Theo Huxtable on The Cosby Show. His father, Cliff Huxtable, played by Bill Cosby, was famous for wearing colorful vests.
community easter eggs: #20 This Better Not Awaken Anything In Me
Dean Pelton has developed an obsession with dalmatians over the course of the series. It started in “Environmental Science” (S01E10), in which we see him looking at a YouTube clip of a dalmatian man and later, in “Modern Warfare” (S01E23) and "A Fistful of Paintballs" (S02E23), he wears a dalmatian-styled vest, and a dalmatian stuffed animal can be seen in his office. He also invites people in dalmatian costumes to the “Tranny Dance”, in “Pascal’s Triangle Revisited” (S01E25). During “Contemporary Impressionists” (S03E11), a dalmatian toy can be seen on his desk, as well as portraits of dalmatians on the wall behind him. Dan has said in the DVD commentaries that he decided put that in the show after a friend of his sent him the link for the original video of the guy wearing a dalmatian costume.
community easter eggs: #18 Now I’m A Student At Greendale Community College
Greendale still uses the Jeff flyers made in “Feminism, Football and You” to advertise the college, as seen in “Herstory Of Dance” (S04E08).
community easter eggs: #17 Lady Miss Lady
During #AnniesMove in “Studies In Modern Movement” (S03E07), we see that she still owns her Lady Miss Lady kit, the one Shirley tricked her to buy, as shown in “Paradigms Of Human Memory” (S02E21).
community easter eggs: #16 Werewolves In London
"Physical Education" (S01E17) references "The Color Of The Money", a 1986 movie about the battle between an old-school pool player and a talentend young man interested in pool hustling. The song “Werewolves of London” that plays in the background when Jeff and Coach Bogner start the match was also in the movie. In the episode, just as the singer says werewolf for the first time, you can see a very hairy-faced guy trying to watch the game.
community easter eggs: #15 Flashbacks
In “Paradigms of Human Memory” (S02E21), the Dean Pelton flashbacks references a couple of previous episodes. In one of them, you can see Jeff with a small RC car, like Pierce said in “Aerodynamics of Gender” (S02E07). You can also see Britta knitting, which goes all the way back to “The Art of Discourse” (S01E22), where she is knitting a little eyepatch for her “fresh kitten.”
community easter eggs: #13 R.I.P.
During the zombie attack in “Epidemiology” (S02E06), two headstones can be seen with the names “Jean Wilson” and “Sean Veder”. Jean Wilson is the name of the blonde judge from “Debate 109” (S01E09) and Sean Veder is the name of an associate producer that left the show in season 1 and later came back in season 3.