There will never be another Dark Brothers. Most of this generation doesn't shoot on film. The reason Gregory Dark has been able to shoot mainstream stuff is because he's actually got talent; the overwhelming majority of porn folk (and people in general) are completely talentless and delusional.
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"I'll never forget the moment during the lovely Alyssa Allure's scene in 'American Bukkake' where the fellow got out of his wheel chair to ejaculate on her face. It was grotesque but had a certain frisson." -Sock