Reviewed by GREG KINGDirector: Marielle HellerStars: Melissa McCarthy, Richard E Grant, Dolly Wells, Ben Falcone, Jane Curtin, Steven Spinella, Christian Navarro, Anna Deveare Smith.Can You Ever Forgive Me? is based on a true story about a struggling writer who, in the early 90s, forged a number of letters from prominent celebrities. It's a strange story about the creative process and the hardships faced …