The proud result of prison labor (DVD and TV part 1)
It makes a nice sandwich (TV part 2)
0100100001101001 (which is “Hi” in binary) (TV part 3)
The robots are coming! The robots are coming! (TV part 4)
The title of the movie "The Beast with a Billion Backs" references the 1955 horror movie The Beast with a Million Eyes and "the beast with two backs", a metaphor for sexual intercourse coined by William Shakespeare in Othello.
This reference has also been made in the episode "Spanish Fry", where an erotic shop that the crew visited was named "The Beast with Two Bucks".
When Fry deleted Yivo's contact on his cell phone, Scruffy the janitor's name can be seen on his list. This is a display of irony since throughout the series, almost no one could remember Scruffy's name or why he was there in the first place.
Fry takes Colleen to a carnival celebrating St. Asimov's Day.
Bender's speech about love is a parody of 1 Corinthians 13:4, "Love is patient, love is kind. It does not envy, it does not boast, it is not proud.
On the audio commentary, David X. Cohen confirms that the title refers to the phrase for sexual intercourse, "the beast with two backs", which originated in Shakespeare's Othello.
Bender fighting Yivo's mouth is a reference to Pirates of the Caribbean: Dead Man's Chest, where Captain Jack Sparrow's hand is locked and the Kraken is about to eat and swallow him. Bender also loses his left foot and has to go around like it is a wooden leg, which many pirates have in many different stories and fairy tales.
In this film, a character called "That Guy" appearing at Farnsworth's meeting maybe a goof.
Zapp Brannigan calls 3008 the year of the Tiger. It's actually going to be the year of the Dragon.
In the Deathball match, Farnsworth uses a ball to break the glass and knock Wernstrom into one of the holes scoring a point. We then zoom out to see no damage and Wernstrom back in his place.