Melissa McCarthy and Girls creator/star Lena Dunham both appeared on The Ellen DeGeneres Show earlier today, where host Ellen DeGeneres suggested that they all be cast in the all-female reboot of Ghostbusters that Paul Feig is directing. After Ellen made the initial suggestion, Lena Dunham had this to say."I have to say, since I've heard that rumor I think every lady in town who fancies herself a jokester wants in."After rumors of an all-female Ghostbusters started popping up last month, original Ghostbusters star Bill Murray suggested that his St.