Paul Thomas Anderson may have found yet another brooding actor to balance out his newfound collection of yellow-haired Vince Vaughn co-stars. PTA blog Cigarettes & Red Vines (via) reports Sean Penn has entered talks to join Joaquin Phoenix, Benicio del Toro, Reese Witherspoon, and Owen Wilson in the director's next film, Inherent Vice. Penn would likely be playing a powerful and violent loan shark, also joining Jena Malone, Kevin O'Connor, and, amazingly, Martin Short in the Thomas Pynchon adaptation. Penn has never worked with the director before but nearly did back in 2002, when he was attached for a time to Philip Seymour Hoffman's role in Punch-Drunk Love. And speaking of, is there a reason Philip Seymour Hoffman not in this yet? I know he wasn't in There Will Be Blood, but come on. We all want to see that pudgy little face looking distressed. Let's get it in there.