Ron Howard mentions his recently born beautiful baby daughter, in the "Focus On Film" sketch, although not by name.
In the sketch "Mayberry 1982", it's implied that Gomer has come out of the closet, and Jim Nabors eventually really did so.
The issue of Playboy Magazine that 'Ronald Reagan' finds in 'Jimmy Carter's' desk at the Oval Office is the November 1976 issue, featuring a controversial interview with Carter by Robert Sheer.