Final answer:
Ian Holm played the android Ash in Ridley Scott's 1979 science fiction horror film, Alien.
Step-by-step explanation:
Ian Holm, who is known for portraying Bilbo Baggins, played the android Ash in the Ridley Scott film Alien. This 1979 science fiction horror film is recognized for its tense, atmospheric storytelling and has become a classic in the genre. Ian Holm's performance as the sinister science officer is a critical part of the film's enduring appeal.