Here are the movies Carrie Fisher secretly helped write
Leia may be her best known part but Fisher was an enormously talented writer with several published books and her semi-autobiographical novel Postcards from the Edge was turned into a major movie (which she also wrote) in 1990.
But her talents were even more widespread as Fisher contributed to the scripts for a whole bunch of massive films in the 80s and 90s. Her work was as a script doctor, someone who doesn't get a credit but is brought in by the studio to fix crappy dialogue or make scenes more punchy.