If you have the History Channel ... try to catch these two:

Modern Marvels: High Tech Sex
Excellent overview of the history of aphrodisiacs, cybersex and current breakthroughs in cloning various bodyparts, including the vagina and penis. Also covers the latest medical research and products for male and female arrousal and contraceptives.

Sex in the 20th Century: The Politics of Pleasure

Covers sexual attitudes over the past 30 or so years, including the rise of pornography and the social and legal reactions.