He also appeared in such classic films as 'Tis and O Lucky Man. From what I understand, his career was ruined by the x-rated footage added to Bob Guccione's film Caligula after principal shooting had stopped. It was not so much the association with pornography but with one of the worst films of all time. I have not seen it but think of Ed Wood directing Ben Hur and splicing in the peep show clips he was making following the...unsuccess...of his magnum opus Plan 9 From Outer Space. Would Charleton Heston have gone on to walk the beach in Planet of the Apes? Or have shouted "Soylent Green is made from peeeeeeeeepuuuuuuuullllllll!!!!!!!" Well, maybe. But I think you get my point.