Asked whether his career was helped by having a famous father in the movie business, he replies that "the advantages were ephemeral. They were limited to people being polite and nice, but that wouldn't necessarily lead to any jobs. It usually meant that I would be underpaid rather than overpaid, and they would expect more of me. By the time I became a star, my father had already retired." His stepmother Mary Pickford, "America's sweetheart," who died in May at the age of 86, joined with Douglas Fairbanks Sr., Charlie Chaplin and D.W. Griffith in 1919 to found United Artists. The following year she married Fairbanks, and together they virtually ruled Hollywood. Douglas Junior, who became close to his father only in his late teens, grew up in New York, Hollywood, London and Paris -- which helps to explain his love for travel and his endless quest for variety. As the creative force behind the acclaimed TV series _Douglas Fairbanks Presents_, he produced an average of 32 one-hour films a year from 1952 and 1957. "My studio manager had a heart attack and my story editor had a nervous breakdown, just from the pressure of getting out these films. I thought I would be next, so I decided to quit," he says. "They were very elaborate productions. We used to have the scripts six months in advance. Now, if you start shooting on Tuesday, you'll get the script on Monday." Today, with his multiple business interests and philanthropic pursuits, he maintains a house in Florida, an office in London, and, since 1956, an apartment on the Upper East Side. He and his wife Mary have been married for 40 years and have three daughters, two of whom live in England. His overall career, concludes Fairbanks, "does not have a single theme, because it's been so diversified. It's been a series of themes. Maybe it's cacophonous. The things I find most interesting don't pay a penny. But possibly all my activities blended together have something to do with a person who's got a lot of curiosity and energy and capacity to enjoy and appreciate life." ******** WESTSIDER LEE FALK Creator of The Phantom and Mandrake the Magician 5-27-78 Who is the most widely read author in the world today? Not counting Chairman Mao, whose quotations are required reading for one-fourth of the earth's population, the honor probably belongs to a dapper, soft-spoken man in his early 60s who could walk from his Westside apartment all the way to Times Square without being recognized. He is not a familiar figure on book jackets or talk shows because Lee Falk happens to be a comic strip writer. His two creations, The Phantom and Mandrake the Magician, are published in more than 500 newspapers in 40 countries. His daily readership: close to 100 million.