Aliens (1986)

With an astonishing 10-to-1 box-office ratio—$183 million worldwide on an $18 million budget—Aliens (1986) remains the most financially efficient sequel in the action genre. Director James Cameron transformed Ridley Scott's horror into a full-throttle war epic, earning two Academy Awards for Best Visual Effects and Best Sound Editing. Sigourney Weaver's Ellen Ripley became the first action performance nominated for an Oscar, setting a benchmark that #10 Heat's ensemble cast never achieved. The film's climactic power-loader duel against the Alien Queen is the most physically intimate large-scale fight scene in cinema, executed with no CGI—only hydraulic rigs and stunt work.