I enjoyed it very much--I'd always heard of industrials (and heard stories of performers giving up Broadway shows to do an industrial, for which the pay was much higher), but it was wonderful to see this history. I wonder if anyone has ever considered an off-Broadway revue of songs from industrials. I suppose it might be like the time an independent movie theatre in Chicago that specialized in 1-2 day runs of classics and art films (I miss those theatres), did a program of 2 hours of trailers--by the end you were exhausted, like eating too much ice cream and cotton candy at the fair.