Man in the Chair (2007) on Netflix

Christopher Plummer plays Flash, a curmudgeon with a hankering for classic movies and booze. Cameron is a volatile teen who commits grand theft auto just because the car is an exact replica from Christine. Their relationship is forged in the darkness of a movie theater and fueled by a mutual appreciation of rebellion and cinema. Cameron enters a student film contest, though he lacks the resources of his peers. Learning that Flash is a retired Hollywood gaffer-and the only surviving crew member from Citizen Kane-Cameron follows him to his home at the Motion Picture Residence for the Elderly, a colony of aging film folk set aside by the industry. A quirky fellowship develops, in which Flash and his friends help Cameron make his film, and, in doing so, change his life.