A 1968 entry in the BBC's venerable 'Omnibus' series, wherein film historian/collector/director/impresario and cheerleader without portfolio Kevin Brownlow asks the Musical question, Why has Abel Gance, this relentlessly inventive film artist of almost occult formal gift, been so comprehensively forgotten? It is a question, admittedly, more pressing in 1968 (when Gance really w...