Face-blindness. I'd never heard of it, except in connection with the old racial joke, "We all look alike to you, anyway." Interesting stuff:
Severe prosopagnosics may mistake complete strangers for acquaintances even as they fail to recognize family members, close friends, spouses, and even themselves.
If I learn how to pronounce it, I wonder if I could use the defense of prosopagnosics if I'm caught kissing a woman besides my wife.
