Towards the end, in the news banner there's the title "Reports Continue of Mysterious 'Air Vent Monster'." This is a reference to the previous episode Cooperative Calligraphy (2010), where it is revealed that a monkey is stealing items and living in the air vents.
WILHELM SCREAM: Heard as Abed watches "Kickpuncher".
When Annie finds Jeff in the closet, a chalkboard can be seen with the picture of a sun. This is the same chalkboard and sun used on the episode "Aerodynamics of Gender" from season 2 at the credits scene when Garrett gives his "It's still sunny" line.
First appearance of recurring character, Greendale student Vicki.
Towards the end of the episode, Joe Biden (played by John J. Reiner) says to Agent Vohlers "I just had a dream that I was a regular president." On November 7, 2020, the "dream" came true when Biden was voted to become 46th President of the United States. President Biden was officially sworn in to office on January 20, 2021.