Growing Pains was one of my favorites growing up. When this hottie appeared to become the nanny, I was blown away at the hotness. Probably just reached the right age at the time too.
I found out years later about the Playboy centerfold.
I also found out years later that Kirk Cameron and his new found Christianity got her fired From the show because he objected to her being in Playboy. Way to show tolerance and forgiveness. I had always wondered why she showed up, Kirk's character kissed her, then a couple episodes later she disappeared.)
But I remember her impact on me when I saw her. Damn!
Edit - Oh yeah! Her name is Julie McCullough.