The smorgasbord of sexual positions were most readers' favorite part of Alex Comfort's classic The Joy of Sex, and they also seem the least dated aspect since the original was published in 1972 (an updated version was released in 1991). So it's no surprise that this small volume incorporating 20 or so of them has proved remarkably popular. The postures it provides range from the exotic (some of which represent entire countries-'Indian style' or 'Chinese style') to relatively simple ones that couples would probably happen upon themselves if they tried long enough--the point is that having plenty of options is sexy in itself. 'There is, in fact, little evidence that one position is better than any other,' Comfort writes. 'Yet there is a case for having a range of postures, both for variety and because many couples find that some really do suit them better than others.' The book also retains some brief passages of Comfort's advice on sexuality in general, which remain as down-to-earth as ever; it's sort of like having a kindly scientist uncle tell you the facts of life. The illustrations, by John Raynes, remain tasteful yet remarkably vivid--a Kama Sutra for the late 20th century.