Cynthia Breazeal's "Your new Best Friend may be a robot" lecture presents interesting ideas about how human/robot interaction is different and more powerful than other human/technology interactions.  Thanks to Colleen Wells (Marshall Middle School, Olympia, WA) for this link.

Update: as a teacher-user pointed out in the commetns below (thanks, Laban), this original link was removed by CNN.

Here is a link [1] describing some of Cynthia's work.

Update 2: another teacher-user found this link to the original Ted Talk (thanks, Deanna):

https://www.ted.com/talks/cynthia_breazeal_the_rise_of_personal_robots/details [2]