 He worked with Antonia Bird on a number of improvisational film productions, including "Safe" (Bafta - Best single drama), "Face", "Rehab" and "Spooks".Tiernan starred in Zack Snyder's "300", an adaptation of the Frank Miller graphic novel, in which he portrayed Ephialtes of Trachis.Filming took place from October 2005 to January 2006 in Montreal.