Trivia for
"21 Jump Street" (1987) More at IMDbPro »

• The character of Booker was supposed to be killed off at the end of the third season. However, he proved so popular that he was spun off onto his own show.
  
  
• This led off the Sunday night lineup during the first season presented by the Fox network.
  
  
• Johnny Depp had always been Patrick Hasburgh's first choice to play Tom Hanson but Depp turned the role down. Jeff Yagher was then cast as Hanson and filming for the pilot began. But Fox was unhappy with his performance and halted production after three weeks. Fox wanted Josh Brolin for the role but Hasburgh wanted to offer the role to Depp again. This time Depp accepted the role and Yagher's scenes were re-shot.
  
  
• After the second season, a spin-off was planned titled "City Court". The intention was to follow the Jump Street cases through the court system. A two-hour pilot was planned in which Tom Hanson is put on trial for murder. But because of the 1988 writer's strike, the series was never produced. The storyline featuring Hanson's murder trial was later used for the third season finale.
  
  
• Ioki's real name was Vinh Van Tran.
  
  
• The show was based on a real life undercover unit in Los Angeles, CA.
  
  
• Johnny Depp and Peter Deluise sang the JUMP!! backup vocals to the opening theme song while Holly Robinson sang the lead.
  
  
• The Mustang that Tom Hanson drove belonged to his father, who was killed in the line of duty.
  
  
• Johnny Depp did not want to work on a television series but agreed to a six-year contract only because he did not believe the show would last more than one season. He also found it difficult to turn down the money and the chance to work with Frederic Forrest. But the show became a huge success mostly due to Depp's presence. By the third season, Depp was chafing at having to stay with the show instead of accepting various film offers. He began to complain about the scripts and often gave listless performances. With the help of his lawyers, Depp was released from his contract and left the show after the fourth season.
  
  
• Barney Martin had two different guest roles on the series: once as Tom Hanson's partner in the Pilot and once playing an alleged kidnapper in the episode "21 Jump Street: In the Custody of a Clown (#2.1)" (1987).
  
  
• When Johnny Depp became increasingly disillusioned with the show, the actor would amuse himself by changing his lines.
  
  
• The cot featured in the holding cell in the Jump Street Chapel, was on occasion used by the actors to ensure they would be on time for work. If an actor had gone out partying the night before, they were known to on occasion go to the set and spend the night on the cot to ensure they could not get in trouble for being late to work,
  
  
• Peter Deluise (Doug Penhall) and Gina Nemo (Dorothy) were married in real life when they dated on the show
  
  
• Johnny Depp often wore a tube sock in his pants as a joke during the filming of this show.
  
  
• As Johnny Depp became increasingly frustrated with the series, he began to put forth ridiculous suggestions for his character to the producers. One such a suggestion included the discovery by the other characters that Tom Hanson was obsessed with peanut butter, and would be discovered by the other characters smearing it all over his naked body.
  
  
• The show is set in the US, but was shot in Vancouver, Canada.
  
  
• Judy's badge number is 714.
  
  

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