How about Wonderboys? - My all time favorite movie about the process of writing and writers (Adaption is a close seccond).
Curtis Hanson directing. Based on a novel written by Michael Chabon, he of John Carter fame.
Michael Douglas, Tobey Maguire's best role, Frances McDormand, Robert Downey Jr. + a bunch of great character actors.
My favorite quote from the movie...
ShowGrady Tripp: He said a few things that lead me to believe that the car was his.
Terry Crabtree: Such as?
Grady Tripp: "That's my car, motherfucker."
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I would never lie. I willfully participate in a campaign of misinformation.