603 Valencia (at 17th Street), 522-5460, www.goodvibes.com

Good Vibrations makes the business of fucking fascinating. Foreplay at the Mission District sex toy emporium begins with its trademark vibrator museum: a revolving display of a dozen quaint devices (such as eggbeater contraptions and pitiful attempts to model the penis) and chronological explanations of their history. The excitement builds with a creative selection of dildos and vibrators, ranging from rainbow strap-ons to the infamous Rabbit. The selection of novelty items -- edible lingerie, vulva-shaped lollipops -- is particularly stimulating for kitsch collectors, and the book selection embraces most kinks, quirks, and erotic persuasions. The adult movie collection is similarly pleasurable, catering more to couples and women than to the stereotypical smut enthusiast. But the peak of the Good Vibes experience is the customer service: It's why you'll see grandmothers, straight and gay couples, and college students milling around the same room. Employees are courteous and informed, and the space is clean and airy -- not creepy or hidden away, like many purveyors of adult wares.