Ironclad (2011)

Cast: James Purefoy, Paul Giamatti, Brian Cox, Kate Mara, Charles Dance
Director: Jonathan English

Summary: Follows the siege of Rochester Castle in 1215 when the despised King John reneged on his signing of the Magna Carta and led a mercenary army to force the rebel barons of England to come back under his tyrannical rule.

Analysis: A big old castle under siege movie about one of the bloodiest battles in world history, this $25 million British indie production shot in Wales takes the knights genre and gives it "visceral and stylized action combined with impassionate heroism and romance" according to producers ContentFilm.