In Judd Apatow's 2007 film Knocked Up and its 2012 spin-off/sequel This is 40, audiences will see Apatow's daughters Maude and Iris as well as his wife Leslie Mann. The trio play heightened versions of themselves, while Paul Rudd plays a sort of stand-in for Apatow himself.
When Winona Ryder suddenly dropped out of the 1990 film The Godfather, Part III, director Francis Ford Coppola called upon someone near and dear to his heart to replace her. In Ryder's stead is Coppola's daughter Sofia, now a respected filmmaker in her own right.
In 2018's The Mule, Clint Eastwood wrestles with his own legacy in a lot of ways. To make matters even more personal, he cast his daughter Alison to play Iris, his character Earl's estranged daughter.
A film 12 years in the making, Richard Linklater's 2014 film Boyhood was quite an undertaking. There was always one cast member he could count on to be there: his own daughter, Lorelei, who played Samantha, protagonist Mason (Ellar Coltrane)'s sister.
In 2005's Star Wars: Episode III — Revenge of the Sith, keen audiences can find director George Lucas's three kids Amanda, Katie and Jett as well as Lucas himself. Jett plays the most visible character, Zett Jukassa a young jedi with an obvious name.
Two of David Lynch's children have had small roles in Twin Peaks. His son Austin Jack played Ms. Tremond/Chalfont (Frances Bay)'s grandson Pierre back in 1990 while his son Riley played Bing in the 2017 revival of the cult project.
Martin Scorsese cast his late parents Catherine and Charles in many of his projects over the years. The most noteworthy example is his 1990 film Goodfellas, in which his mother plays Tommy DeVito (Joe Pesci)'s own mom.