Which 1973 film starring Richard Dreyfuss launched Lucas's career?

The 1973 film starring Richard Dreyfuss that launched George Lucas’s mainstream career was American Graffiti.

Lucas directed and co-wrote American Graffiti, drawing on his teenage experiences cruising the streets of Modesto, California. Set over one night in 1962, the coming-of-age film follows several young people facing decisions about school, romance, friendship, and leaving their hometown. Dreyfuss played Curt Henderson, an uncertain graduate preparing to leave for college.

The film was produced by Francis Ford Coppola, who had worked with Lucas on THX 1138. Universal initially had limited faith in the project, but Coppola’s involvement helped secure a theatrical release. American Graffiti became a major commercial and critical success despite its modest budget.

Its success gave Lucas the industry credibility to pursue larger projects, including Star Wars. The ensemble also became notable for future stars: Ron Howard, Harrison Ford, Cindy Williams, and Charles Martin Smith were among the cast. American Graffiti received five Academy Award nominations, including Best Picture.