 When Shaw arrived at the set for filming , he ran into his friend Ian McDiarmid , the actor playing Emperor Palpatine . When McDiarmid asked him what he was doing there , Shaw responded , " I don 't know , dear boy , I think it 's something to do with science @-@ fiction . " His presence during the filming was kept secret from all but the minimum cast and crew , and Shaw was contractually obliged not to discuss any film secrets with anyone , even his family . The unmasking scene , directed by Richard Marquand , was filmed in one day and required only a few takes , with no alteration from the original dialogue . When the film was re @-@ released on DVD in 2004 , a few changes were made : the unmasking scene with Hamill remained mostly the same , but Shaw 's eyebrows were digitally removed to tie in with the injuries Anakin Skywalker suffers at the end of Revenge of the Sith . Shaw 's eyes were also digitally coloured to look like those of Hayden Christensen , the actor who played Anakin in Attack of the Clones and Revenge of the Sith . 
