Another name fans keep throwing around on Twitter is Kathryn Hahn, who you might recognise as Jennifer Barkley from Parks and Recreation. "Imagine her comedic timing and serious chops [with] Sorkin's dialogue," one fan tweeted when Sorkin's film was just an idea. Hahn has been a comedy mainstay since her turn as Michelle Rueben in 2003's How to Lose a Guy in 10 Days. When it comes to more dramatic roles, Hahn has certainly proved herself with her roles on I Know This Much Is True and Private Life.