Robert Downey Jr. is a renowned actor who has played Tony Stark aka Iron Man for over a decade in the Marvel Cinematic Universe (MCU). Fans all across the world adore his portrayal of the intellect, billionaire, playboy, and philanthropist. In a career span of over 5 decades, he has delivered numerous outstanding performances. We all know our favourite Iron Man but apart from the MCU movies, the actor has given us some outstanding performances in other Hollywood movies as well. Here is the list of the top 5 must-watch movies of Robert Downey Jr. apart from MCU.