Robert Charles Kerman (born December 16, 1947), also known as R. Bolla, or Richard Bolla, is an American actor. He grew up in a middle-class Italian-Jewish neighborhood of Brooklyn, New York. As R. Bolla, he appeared in well over 100 pornographic films, most famously Debbie Does Dallas (1978). He also appeared in the sequel, Debbie Does Dallas II (1981). He's also one of the few adult film stars to make the jump into mainstream cinema. His most famous mainstream role was as Dr. Harold Monroe in the controversial horror film Cannibal Holocaust.