One of the hippest series of all time. This 1968-73 cop drama involved three undercover cops with a touch of menace and plenty of attitude. Recruited by L.A.P.D. Captain Greer to work inside the city's counter-culture scene and help bring down the crooks who targeted the young people of Southern California. All 5 Seasons. 124 episodes, 107 hrs, 20 DVDs.