**Leonard Rossiter (1926-1984)** was a British actor, renowned for his comedic television roles, but with a significant film career. Specializing in portraying characters often mean-spirited, neurotic, pompous, or pathetic, Rossiter possessed a unique talent for situational and physical comedy.

Among his most memorable film appearances are Dr. Smyslov in Stanley Kubrick's *2001: A Space Odyssey* (1968), the role of Paul Travers in Lindsay Anderson's *O Lucky Man!* (1973), and a distinctive cameo in Kubrick's *Barry Lyndon* (1975). He also left his mark in *Britannia Hospital* (1982). His distinctive style, characterized by impeccable diction and intense energy, made him one of the most original comedic actors in British cinema.