Daniel Peter O'Herlihy was an Irish actor of film, television and radio. O'Herlihy's best-known roles included his Oscar-nominated portrayal of the lead character in Luis Buñuel's Robinson Crusoe (1954), Brigadier General Warren A. Black in Fail Safe (1964), Marshal Ney in Waterloo (1970), Conal Cochran in Halloween III: Season of the Witch (1982), Grig in The Last Starfighter (1984), "The Old Man" in RoboCop (1987) and its 1990 sequel, and Andrew Packard in the television series Twin Peaks (1990–91).

Robinson Crusoe is a 1954 adventure film directed by Luis Buñuel, based on the 1719 novel of the same name by Daniel Defoe. It stars Dan O'Herlihy as Crusoe and Jaime Fernández as Friday. Both English and Spanish versions were produced, making it Buñuel's first English-language film.