The top mistakes in 21 Jump Street http://www.moviemistakes.com/tv5307 en Sat, 04 Feb 2012 06:59:13 +0000 146751 In "Don't Pet the Teacher", when Jeffrey Stone talks to Albert the janitor, a boom mic briefly dips into the shot over Jeffrey's head. 170827 In the pilot episode, at the end of the car chase, officer Tom Hanson's weapon changes from a Police Special (.38 or .45) to a .357 Magnum.