Misc: Name the U.S.S.R. leader with a birthmark on his forehead?

Questions

What did the call letters of Chicago radio and TV station WLS originally stand for, in reference to Sears Roebuck (its former owner)?

What was the name of the pet mongrel dog of President Lyndon Johnson found by Johnson’s daughter Luci at a Texan gas station?

What was the name of the girlfriend of Bazooka Joe in the comics included with Bazooka Bubble Gum?

What was the name of the supercomputer in the TV Series Quantum Leap?

What was the real first name of Holly Golightly (Audrey Hepburn) in the film, ‘Breakfast At Tiffany’s?