Fans of Scarlett Johansson — or of her cleavage — must be donkey-punching themselves with glee over rumors that the Oscar-nominated actress may bring that necessary dose of gravitas, youth, and authentic breasts to an upcoming Jenna Jameson biopic. According to the Daily Express, the self-proclaimed "World's Greatest Newspaper" and bastion of the rigidly fact-based journalism we've come to cherish from the British tabs, naturally curvy Johansson has assumed the missionary position and will cleave to the role of the surgically enhanced porn star in a Universal project:.