A representative for actor Michael Pitt has shot down rumors suggesting he is dating Kristen Stewart following her split from Robert Pattinson. The actress parted ways with her ?Twilight? co-star Pattinson for good in May, less than a year after Stewart admitted to an ?indiscretion? with her ?Snow White and the Huntsman? director Rupert Sanders last summer. Add two more names to Homeland's lengthy roster of season three guest stars. The Hollywood Reporter has learned that the Showtime drama has tapped Martin Donovan and Shaun Toub for roles in the upcoming run. Stacy Keibler made a public comment regarding her recent-breakup with George Clooney saying"There's nothing really dramatic that happened, so it's all good."