ACTOR Simon Yam, known in the movie business as ''The Body'' on account of his recent cinematic credits, has acquired an interesting celluloid sideline by way of change. The popular movie star - he admitted to us that he accepts only one out of every 10 offers to do skin flicks (of an artistic kind, of course) - has started making video travelogues for his own production company. So far the film cameras have captured him in picturesque tourist settings in Sri Lanka, the Maldives and Jordan. A photographer accompanied the film crew on the recent Jordan trip and his stills of Simon in the desert have been reproduced in a magazine that is currently being snapped up by the actor's female fans. Alas, nearly all the photographs depict their hero covered from head to foot as a Bedouin tribesman. But the settings at least are stunning.