Dan O'Herlihy was a formidable screen presence known for his commanding voice and distinctive, often intense, gaze. While he made his mark across various genres, receiving an Academy Award nomination for his lead role in Luis Buñuel’s 1954 classic *Adventures of Robinson Crusoe*, collectors most often seek out his later, iconic genre performances. He brought a chilling gravitas to the villainous Conal Cochran in 1982's *Halloween III: Season of the Witch*, a film that has gained significant cult status and often sees premium treatment on Blu-ray and 4K from boutique labels. However, it's his portrayal of "The Old Man" in Paul Verhoeven's seminal 1987 sci-fi action film, *RoboCop*, that truly solidified his place in the hearts of physical media enthusiasts. His darkly comedic yet utterly ruthless CEO became an unforgettable antagonist, driving collectors to seek out every pristine edition of this film, from Criterion’s laserdisc to Arrow Video’s definitive 4K UHD release. His final noteworthy role as Andrew Packard in David Lynch’s *Twin Peaks* further showcases his legacy, ensuring O'Herlihy remains a sought-after name for those dedicated to preserving cinematic history in their home video libraries.