Contemporaries across the spectrum of the Left, from Antonio Negri to Noam Chomsky, are falling over each other to claim the mantle of Left Communism, the thoery and practise of workers' control and self-organisation, whose adherents provided the main opposition to the Bolsheviks during the Russian revolution. Rarely printed, often cited, Pannekoek's Workers' Councils is the Das Kapital of Left Communism, now updated to include a substantial introduction from Noam Chomsky, illuminating the continuing relevance of this classic text.