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The vice dean dies from a lethaldoes ofFreon, butFreonis not toxic or lethal.
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Evil Abed is a reference to season 3 episode 4 "Remedial Chaos Theory."
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When Troy emerges from the blanket room, he is humming the same song that played on the radio during Abed's Halloween story.
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One of the green screen videos in the background shows the ship from the 1978 show Salvage 1.
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Actors Busy Philipps and Dan Byrd who are stars on the show Cougar Town make a short cameo appearance toward the end of the episode when Greendale celebrates its win in the paintball game. Cougar Town was referred to several times in the episode "Critical Film Studies" when Abed explained what a big fan of the show he is and how he got invited to the set of the show, which indeed occurs as Danny Pudi had a background cameo in the Cougar Town season 2 finale "Something Good Coming".
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Jeff's costume is the same one he wore in "Introduction to Statistics"
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The Jeff/Annie shipper video to "Gravity" in the middle of this episode was influenced by a real life fan video, found on YouTube
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Pierce's Hawthorne Manor wine has the Italian motto "La tua diventa più bello con ogni bottiglia," which translates to "You become more beautiful with every bottle."
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In the opening scene, Annie waves the flag in her hand when she says that one of the dishes is popular in Ghana, likely to imply that it is the Ghanese flag. However, the flag that she is holding and several others in the room are in fact Zimbabwean.
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Goof: When Troy and Abed are giving their first comments on the candidates, the profile on Jeff shows his Kryptonite as "Women's Tears". However, the word Kryptonite is spelled without the "r".
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In Aerodynamics of GenderAbed's visor features a foreshadowing note about Troy's birthday being in 2 weeks.
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In Abed's visor in the episode "Aerodynamics of Gender" has a Memo of building a blanket fort and he does build one in this episode.
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At the end of the episode, we finally see what has happened to Troy's pet monkey, Annie's Boobs, from Season 1's "Contemporary American Poultry". If you look closely, you can also see a small hand grab Annie's purple pen off the table at the beginning of the episode, while the Dean is telling everyone about the Puppy Parade.
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This episode featured a new opening credits sequence that was special and exclusive for Halloween.
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Abed's costume choice for his movie is possibly a reference to Gaius Baltar of Battlestar Galactica, who rose up as a religious and spiritual leader of the surviving humans.
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Throughout the entire episode, there is a story going on in the background about Abed and a pregnant woman, unknown to all the other characters.
In the opening scenes, he is talking to her behind Jeff. She goes into labor in the lunchroom and Abed leads her outside.
During the oil fight scene, if you look behind Shirley on the bench, you can see Abed delivering a baby in the back of a truck. Later you see the happy couple standing around with baby in hand.
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Jeff's middle name is Tobias, as said by Alan Connor in the email sent to the State Bar Association.
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Donald Glover revealed in an interview that there were actually eight giant cookies that were baked the night before taping for Troy to carry throughout the "Tranny Queen" scenes.
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Britta is a vegetarian.
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Britta used to live in New York.