I saw a Moxied episode of Quantum Leap last night entitled "Goodbye, Norma Jean," where Sam leaps into the body of Marilyn Monroe's driver. He has to get her to the set of "The Misfits" so that she can complete the movie before her alleged suicide. An odd mission, seeing as how this wasn't the last film she worked on. She went on to film "Something's Got to Give" the following year with Dean Martin but it was never completed because of her death.
Anyway, I was fascinated by the woman who plays Marilyn Monroe, named Susan Griffiths. Not only did she look like Marilyn (not just your typical big eyelashes and platinum wig) but she sounded like her, too. Looking her up on the net, I found that she has an extensive career as a Marilyn-impersonator, even being featured in big films like "Pulp Fiction."
Check out her resume and a short film reel of her work at her website.