What's annoying about depictions of writers in films and TV is usually fantasy elements like sudden success, writing a large body of work overnight, and flashes of inspiration somehow replacing hard work. It's normally made to look very easy. Ironically, this story element is usually in place to relieve what might be considered boring in a writer's true story. But I think non-writers find these cliches as hokey and tension-free as the rest of us do.
Movies with writers as main characters which I like:
Bullets over Broadway
American Splendor
Misery
My Dinner with Andre
Hannah and her Sisters
With the first four at least, pressures associated with writing are at the center of the story. Good movies featuring journalists of various sorts are too numerous to mention.
Finding Forrester bugged me... It's been a while since I saw it so forgive me if I get a detail wrong here, but I seem to recall a climactic scene when an audience was supposed to be wowed by a brilliant piece of writing. The screenwriter was either unable to fake that brilliance, or chickened out of trying (at least with a substantial portion that wouldn't have been too long for a movie scene). The content of the piece was skipped over in some sort of time lapse or scene transition, and we only saw the positive reaction to the piece after the fact. It felt contrived and I felt cheated after the terrific buildup the rest of the movie provided.