In July 2012 , Gilliam revealed plans for a film which would be shot in Bucharest , Romania . He denied that it would be '' Don Quixote '' but refused to give any further details . The actor David Walliams reportedly entered into talks with Gilliam to play a part in it and was told that he 'd have to " be willing to work with Johnny Depp and fly to Bucharest where the movie is to be filmed . " Depp , to that point , had made no mention of his involvement but was seen in Bucharest around the same time in mid-July as Romanian news outlets reported Gilliam was staying in the city for negotiations on studio work with the Romanian film production company MediaPro Studios . On 13 August 2012 , this project was announced to be '' The Zero Theorem '' , set to start shooting in Bucharest on 22 October , produced by Dean Zanuck ( son of the late Richard D. Zanuck , who was originally to produce the film in 2009 ) , with worldwide sales handled by Voltage Pictures , Toronto , and starring the Academy Award – winner Christoph Waltz in the lead ( replacing Billy Bob Thornton , who had been attached to the project in 2009 ) . '' The Zero Theorem '' premiered at the 70th Venice International Film Festival on 2 September 2013
70th Venice International Film Festival
70th Venice International Film Festival
Terry Gilliam