Question: who plays chucky's voice in child's play
Answer: Bradford Claude Dourif ( / ˈdɔːrɪf / ; born March 18 , 1950 ) is an American stage and film actor , known for playing Billy Bibbit in One Flew Over the Cuckoo 's Nest ( which won him a Golden Globe Award and BAFTA Award , as well as a nomination for the Academy Award for Best Supporting Actor ) , Chucky in the Chucky franchise , Gríma Wormtongue in The Lord of the Rings , Deputy Clinton Pell in Mississippi Burning , Piter De Vries in Dune and Doc Cochran in Deadwood ( for which he earned an Emmy Award nomination ) .