...AS IF I'D NEVER SEEN YOU BEFORE
A BEGINNER'S GUIDE TO
The first pictures are of Deanna Troi disguised as a Romulan and the half-Romulan daughter of Tasha Yar from Star Trek-The Next Generation.
The second example is of Patty and Cathy Lane from The Patty Duke Show from the 1960s. I never could figure out how those two looked alike. They didn't and don't look alike to me.
Both of these are actual examples of TV shows that confused and baffled me back in the day when I had never heard of faceblindness.
There is a Yahoo Group Face Blindness Prosopagnosia of which I am a member.
Here are links for more information
NINDS Prosopagnosia Information Page - for those who like government pages
Prosopagnosia - 10 FAQs
Prosopagnosia Research Centers - for the academically inclined
TEST YOURSELF! - If you wonder if you might have a wee touch of this condition.