One of the biggest box office draws in the world from the 1970s through the early 1990s, actor, writer, director and producer Sylvester Stallone combined sheer physical brawn with a touch of vulnerability in two major movie franchises – the Academy Award-winning “Rocky” (1976) and its five sequels, as well as the jingoistic, ultra-violent “Rambo” quartet (1981-2008). Frequently reviled by critics and pundits for his acting and movie choices, Stallone persevered through several major career eclipses, only to come back, much like Rocky Balboa, time and time again as the pop cultural icon that he most definitely was....