One of the most beloved movies in history is getting its own movie, this one about its mythic creation story. The making of Rocky will soon be chronicled in a new film calledI Play Rocky directed by Peter Farrelly of Green Book (and before that Kingpin and There’s Something About Mary and many other comedies with his brother Bobby Farrelly) fame. Per Variety, I Play Rocky “will follow [Sylvester] Stallone long before his action hero days. Here, he’s a struggling actor whose partially paralyzed face and a speech impediment hasn’t left him in demand by Hollywood. But betting on his talent, Stall…