Holm's first film role to have a major effect was that of Ash, the "calm, technocratic" science officer in Ridley Scott's science-fiction film "Alien" (1979). His portrayal of Sam Mussabini in "Chariots of Fire" (1981) earned him a special award at the Cannes Film Festival, a BAFTA award for Best Actor in a Supporting Role, and an Academy Award nomination for Best Supporting Actor. In the 1980s, he had memorable roles in "Time Bandits" (1981), "" (1984) and Terry Gilliam's "Brazil" (1985). He played Lewis Carroll, the author of "Alice in Wonderland", in "Dreamchild" (1985).