Some people are able to make such an impression on us or intrigue us to the extent that they come up constantly in group conversations. We can't talk about them or their affairs enough, whether we are involved a little or a lot...

How are do they make us love to talk about them so much? Do they intend/try to? Or are they just so off-beat, quirky, misunderstood, or angst-ridden that we can't help but discuss them amongst ourselves? Do they have any idea they have this kind of an impact on us?