In “Sly,” director Thom Zimny (“Springsteen on Broadway,” “Elvis Presley: The Searcher”) captures a side of Sylvester Stallone seldom seen. The 95-minute docu exposes a relatable, vulnerable man who is often thought to be the movie characters he made iconic — Rocky Balboa or John Rambo. Born in 1946, Stallone grew up in New York […]
