In Terminator 2: Judgment Day, James Cameron pulled off one of the most convincing visual tricks without relying on CGI or editing magic. When the T-1000 mimicked people standing nearby, Cameron didn’t use digital effects—instead, he cleverly cast real-life twins to play the characters. Linda Hamilton’s twin sister, Leslie Hamilton, was used in key scenes where Sarah Connor was duplicated, while twin actors Don and Dan Stanton were cast to create the illusion of the T-1000 seamlessly transforming. This brilliant use of practical effects made the scenes feel more realistic, proving Cameron’s genius in filmmaking.