Documentary?sequel?that?offers?a?close-up?look?into?the?personal?lives?of?the?legendary?porn?stars?who've?survived?the?test?of?time?and?influenced?popular?culture.?Blends?rare?interviews?with?erotic?clips?and?additional?appearances?by?Whoopi?Goldberg,?Steven?Soderbergh?and?a?host?of?adult?stars,?directors?and?trendsett…