Simpsons Season 6, Episode 23: The Springfield Connection

After he cons Homer, Marge chases down Snake, and gets him arrested. Finding the experience exhilarating, Marge enrolls in the police force. After passing the training course, Marge begins fighting crime. Initially Homer finds that being a "cop-husband" is good, but changes his mind when Marge arrests him for illegal parking and stealing her police hat. After he is released, Homer finds a jean-counterfeiting operation in his garage, led by Herman.