He was known for his roles in a wide range of films such as The Seventh Seal (1957), The Exorcist (1973), Flash Gordon (1980), Never Say Never Again (1983), Dune (1984), Judge Dredd (1995), Minority Report (2002), and Extremely Loud And Incredibly Close (2011) (which earned him his second Oscar nomination). He had also worked in voice acting, lending his voice to video games such as The Elder Scrolls V: Skyrim and Ghostbusters 2. He joined the cast of HBO's hit series Game of Thrones in 2016 alongside fellow The Force Awakens cast mate Gwendoline Christie, where he portrayed the Three-Eyed Raven.