This one is extremely difficult. Lorimar assembled such a great team of writers for this show. I love just about all of them. Some of my personal favorites would be:
Michael Russnow and Tony Kayden ("The Thoroughbred")
Ralph Senensky ("The Conflict")
John McGreevey (anything he wrote, but especially "The Hunt", "The Star", and "The Legend")
Earl Hamner ("The Reunion")
Dale Eunson, Andy White, Earl Hamner ("The Achievement")
Marion Hargrove ("The Prophecy") - This one, I think, we all can relate to.
Seth Freeman ("The Intruders")
Andy White ("The Wing-Walker", "The First Casualty")
Joanna Lee, Earl Hamner ("The Thanksgiving Story")
Dale Eunson ("The Heritage")
I could go on and on! This is nearly impossible!