Not exactly what you asked, but I once wrote a TV pilot based on the original V miniseries. It was the same idea, but when the aliens tear off their human masks, they all look and act like me. The most disturbing part was the young women who shacks up with one of the aliens, and gets pregnant with twins. The first baby comes out and seems normal, but then opens his mouth and says "There's my mom. She's tired from delivering me. And there's the doctor. And several nurses. And..." Suddenly, the first baby is interrupted when the second baby is born, and he has my face, hair, and tunic. It was chilling.
No one would buy the script, but man, was it sweet.