'The Great Gatsby': Isla Fisher In, Ben Affleck Out

Isla Fisher could be cast in Baz Luhrmann's 3D take of "The Great Gatsby" as one of the central characters. At the same time, it's reported that Ben Affleck who has been touted to portray Tom Buchanan may not be in the movie after all. Fisher has entered a negotiation to play Myrtle Wilson aka Tom's mistress. In the novel, Myrtle is a woman married to a garage mechanic George Wilson but is weak