They're getting more and more sophisticated:
She looked at me with her motion detectors as I rubbed the piezoelectric sensor between her thighs. Then I spun the potentiometers that jutted out from her chest like nipples. But it wasn't until I stroked the piezosensor on the back of her neck that she began to moan, first quietly and then loudly, like a thousand women reaching orgasm together.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2007/10/robot-love/224416/
