S1, E3: In the ’80s, family values undergo a huge makeover, as depicted in films and sitcoms. At the start of the decade some, including President Reagan, yearn to go back to traditional ’50s family values, as seen in the hit movie “Back to the Future.” But by the end of the decade, with confidence growing and the help of the cartoon family “The Simpsons,” American families can finally express themselves and get real.