In June 2014 , James Franco 's younger brother , Dave Franco , informally announced at a midnight showing of '' The Room '' that he had been cast in the co-starring role of Greg Sestero . Wiseau praised the decision in a Q&A session . The film is the first collaboration of James and brother Dave , as the younger Franco has said that he had sought different projects deliberately , specifying in an interview at the Toronto International Film Festival , " I did n't want people to think I was riding his coattails . " As New Line Cinema sought to acquire '' The Disaster Artist '' in October 2015 , one of the film 's producers , and frequent Franco collaborator , Seth Rogen , was in negotiations to play '' The Room '' s script supervisor , Sandy Schklair . Schklair expressed concern over the film 's portrayal of him , as Rogen did not pursue contact with him , despite his offers to sit down and discuss the film . The remainder of the principal cast were revealed in the days prior to the beginning of filming , in early December 2015 : Josh Hutcherson plays Philip Haldiman , Ari Graynor as Juliette Danielle , Jacki Weaver as Carolyn Minnott , Hannibal Buress as Bill Meur , Andrew Santino as Scott Holmes , and Zac Efron as Dan Janjigian . Dave Franco 's wife , Alison Brie , joined the cast in the role of Sestero 's then-girlfriend , Amber , and Sharon Stone was later announced to have been cast as Hollywood talent agent Iris Burton . Sestero stated in January 2016 that Bryan Cranston had been cast in the film in an undisclosed role . In November 2016 , he was revealed to be playing himself during his time working on '' Malcolm in the Middle ''
Toronto International Film Festival
2017 Toronto International Film Festival
The Disaster Artist (film)