time capsule / dec. 15, 1985

America wins the Cold War at the box office with Rocky IV, in which our Philly-born hero KOs computer-trained Russian fighter Dolph Lundgren. In 1990, the series goes down for the count with Rocky V. On TV, The Cosby Show hits its second-season stride, beginning what will be the Huxtable family's four-year reign at the top of the Nielsen ratings -- and ushering in the age of NBC's Must See Thursday night. Singer Lionel Richie (left) hits No. 1 on the music charts with ''Say You, Say Me,'' from the film White Nights -- yet another Cold War drama, this time with choreography; 1986's ''Dancing on the Ceiling'' will be Richie's last top 10 single to date. Harvey and Marilyn Diamond's Fit for Life hits No. 1 on the best-seller list; the diet guide will stay there for a healthy 66 weeks and, despite criticism from medical experts, become the decade's fourth-best-selling book.