I had one on Saturday from a woman of asian accent.
I had nothing to do and managed to keep her talking for over 10 minutes before she finally got pissed off enough to give up.
She started with a patter about "am I the main computer user and am I monitorring my security". After several minutes of me asking lots of noobie type questions we go to right clicking on My Computer. To questions like, what menu items to you see, I answered like "the normal list, yes everything is there".
She started to sound a bit grumpy and finally hung up when I chuckled at one of my own answers.