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You probably know all about Carrie Fisher, the actress — her big breakthrough in the original Star Wars trilogy, her villainous turn in The Blues Brothers, her slew of best-friend roles in the ’80s (with her character in When Harry Met Sally… being the epitome of the trope). But you might know less about Carrie Fisher the writer.

Sure, she gained fame as a novelist for her autobiographical tome Postcards From the Edge, which tells of a drug-addicted actress coming to term with her personal demons (one of which being her overbearing mother, an aging actress desperately clinging onto her legacy). It is based on her own issues with drugs and alcohol — and her mother, the famed Debbie Reynolds. (Meryl Streep would get an Oscar nomination for playing, well, Carrie Fisher in the movie version, with Shirley MacLaine delivering a brilliant performance as a pseudo Debbie Reynolds.)

Fisher adapted her own novel as a screenplay, and while it’s her only credited work on a feature film (she co-wrote the made-for-TV movie These Old Broads, starring her mother alongside, shockingly, Elizabeth Taylor, for whom Fisher’s father Eddie left Reynolds in the late ’50s), it’s not the only script she worked on. Throughout the ’90s, after stepping out of the limelight as a leading actress, Fisher worked as a script doctor on numerous films — plenty of which you probably didn’t know about.

Some notable films she worked on — without credit, by the way — include Hook, Sister Act, The River Wild, The Wedding Singer, Coyote Ugly, Scream 3 (in which she also has a cameo), Mr. and Mrs. Smith, and the Star Wars prequels (a gig she got from her working relationship with creator George Lucas, naturally).

Of course, Fisher isn’t the only Hollywood A-lister who has taken uncredited jobs working on previously written scripts. Oscar-winner Aaron Sorkin touched up the Best Picture-winning Schindler’s List, and Joss Whedon worked on variety of films in the ’90s, including Speed, Twister, and Waterworld. The most surprising, though, might be Quentin Tarantino, who worked on the SNL sketch-to-movie flop, It’s Pat.

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