Did anyone else know James Caan based Sonny Corleone on Don Rickles instead of a real mobster? Total plot twist! Caan said he just started acting like Rickles on set, roasting everyone, and Coppola let him run with it. Adds a whole new layer to Sonny’s vibe! Also, can we talk about that mooning contest with Brando? Absolute chaos! #Entertainment #Movies #JamesCaan