If you don't kill me right now, it'll be the last mistake you make. La resa dei conti (The Big Gundown) is directed by Sergio Sollima and written by Sollima and Sergio Donati. It stars Lee Van Cleef, Tomas Milian, Walter Barnes and Gerard Herter. Music is by Ennio Morricone and cinematography by Carlo Calini. Superior Spaghetti Western with shades of Zapata for good measure, The Big Gundown finds Van Cleef as bounty hunter - cum - unofficial lawman Jonathan Corbett, whose reputation for bringing in the criminals, dead or alive, has caught the attention of business baron Brockston (Barnes).…