Jerry Zucker has directed films (Airplane!, Ruthless People) in tandem with his brother David and their friend Jim Abrahams, but now Jerry's going solo. He says the Bruce Joel Rubin screenplay for Ghost -- about the love between the living and the dead -- is "unlike anything I had read before." Obviously, Zucker never read the scripts to Blithe Spirit, The Ghost and Mrs. Muir and Dona Flor and Her Two Husbands, to name just three classic movies with the same theme. And there have been many…