The Black List is compiled each year from the suggestions of over 300 film executives who contribute the names of their favorite ten scripts from that year — which have not begun principal photography.
The top pick, with 133 votes, is The Imitation Game, by Graham Moore:
The story of British WWII cryptographer Alan Turing, who cracked the German Enigma code and later poisoned himself after being criminally prosecuted for being a homosexual.
(Hat tip to io9.)