In which film did Harrison Ford have his break-through?

Explanation

Harrison Ford (born 1942 in Chicago) is an American actor. He is known for playing characters that use their intelligence rather than their physical strength. He had his breakthrough in 1977 in the role as Han Solo in 'Star Wars', but is probably better known for his role in the Indiana Jones films, the first of which premiered in 1981. Ford is also known for his role as Rick Deckard in the cult film 'Blade Runner' (1982). Bill Clinton is a close friend and golf partner.