Eric McCormack is returning to TNT as the star of the network's pilot Perception. The Will & Grace alum is in negotiation to play the lead in the project, Dr. Geoffrey Pierce, an eccentric, frequently erratic and absolutely brilliant neuroscientist who helps the FBI solve complex cases. Kenneth Biller and Mike Sussman co-wrote the pilot, which is produced by ABC Studios. At TNT, McCormack previously toplined ad agency drama Trust Me. He recently played the title character in the Lifetime movie Who Is Clark Rockefeller?, recurred on the CBS comedy The New Adventures of Old Christine and starred in the Artsclub Theatre production of Glengarry Glen Ross in Vancouver. Perception is one of 4 pilots recently greenlighted by TNT - along with Hollywood & Vine, Dallas, and an untitled project from Allan Loeb - and the first one to cast its lead.