 As Vice President of Creative Affairs at boutique studio Marble Arch Productions, his projects included The Muppet Movie, Sophie's Choice and On Golden Pond.Parker turned to producing, with films My Stepmother is an Alien directed by Richard Benjamin and starring Dan Aykroyd and Kim Basinger, Thursday's Child with Gena Rowlands and Rob Lowe, Legs with Gwen Verdon and John Heard, and The Fighter with Gregory Harrison.During the 1990s he began to focus on screenwriting, with 18 produced movies and miniseries, including "Joan of Arc" with Leelee Sobieski and Peter O'Toole and "Nuremberg" with Alec Baldwin and Christopher Plummer .