21 Jump Street

21 Jump Street aired on Fox from April 1987 through April 1991 and included 103 episodes over 5 seasons. The series premise was having a group of young-looking cops going undercover to investigate under-age criminals or troubled youths.

The series had a number of cast changes during its 5 seasons, but it is probably most notable for Johnny Depp portraying Officer Thomas Hanson for the first 4 seasons and Holly Robinson starring as Detective Judy Hoffs for the series entire run.