According to Addie Morfoot, writing in Variety about the documentary Sly, the director Thom Zimny “captures a side of Sylvester Stallone seldom seen.” How can Stallone, who has hardly shied away from the spotlight since rising to superstardom through his Rocky franchise, have anything left to reveal? Sly proves that there are always further stones to be unturned, even if your name is Rambo. The documentary, which premiered at the Toronto Film Festival in September, dives deeply into the actor’s unlikely life and career, disclosing a Stallone far more vulnerable and self-deprecating than one might expect after watching The Expendables. He describes in color his troubled upbringing, his fruitless—and sometimes perilous—early years as an actor, and the subsequent challenges his immense fame has fostered. Sly features interviews with Quentin Tarantino and Arnold Schwarzenegger, among others. But the true pleasure of the film stems from the charm, authenticity, and good humor of the actor himself. —Jack Sullivan