The Butterjunk Effect

"The Butterjunk Effect" is the one hundred and twentieth episode of Futurama, the sixth of the seventh production season and the ninth broadcast season.

Plot
Fry is sprayed with the pheromone of a giant male butterfly - which makes him irresistibly attractive to Leela and Amy. Also, the two girls become addicted to Nectar, a nutritional supplement that boosts their performance in the future sport of Butterfly Derby.

Production
On 29 February 2012, CGEF revealed the episode's title, its writer to be Michael Rowe and its director to be Crystal Chesney-Thompson.

In May, Countdown to Futurama began releasing promotional material for the episode.

It has so far released eight items: A design of a new character, Tank, which revealed the episode's plot on 30 May, a promotional picture showing Amy and Leela as wingnuts on 31 May, part of the storyboard showing Leela kiss Fry on 1 June, a design of another new character, an old lady, on 2 June, a promotional picture showing Farnsworth watch Leela and Amy kissing Fry on 3 June, a design of a nose-pronged device on 4 June, a video clip featuring Kif, Amy, Leela, Fry and Bender in what resembles the inside of a tree - where Leela and Amy kiss-fight over Fry - on 5 June and the fifth Futurama podcast - which revealed more information about Butterfly Derby, Tank (including the fact that she is actually named "Truck"), Nectar, the old lady, the plot and the nose-pronged device - on 6 June. On 28 June, revealed the episode's air date.

In an interview with David X. Cohen on wired.com, it was revealed that the Butterfly Derby sport is played on the low-gravity surface of the Moon, where players can strap on wings and attack their opponents. Cohen added: "It's like a, with human butterflies."

On 12 July, following the broadcast of the episode "Zapp Dingbat", the public were given the opportunity to participate in a live chat with the Futurama cast and crew. Several clips of "The Butterjunk Effect" were shown during the live stream.

Allusions

 * The episode's title is a reference to the chaos theory .
 * The episode's title could also be a reference to the film , which is named after the chaos theory.

Continuity

 * The relationship between Kif and Amy was last used.
 * Bender said "this guy's got it goin' on."
 * The relationship between Fry and Amy was last used.
 * The relationship between Fry and Leela was last used.
 * The relationship between Fry and Amy was last used.
 * The relationship between Fry and Leela was last used.
 * The relationship between Fry and Leela was last used.
 * The relationship between Fry and Leela was last used.

Trivia

 * The voice of "Trainer" is Jill Talley, the wife of Tom Kenny (Abner Doubledeal).

Characters

 * Amy
 * Bender
 * Farnsworth
 * Fry
 * Kif
 * Leela
 * Debut: The old lady
 * Debut: Tank
 * Debut: Truck