Yes, this show is technically from the '90s, but it was such a huge part of my TV-watching experience as a kid that I couldn't leave out Tia and Tamera. Separated at birth and reunited in their teens, these sisters made me wish I had a twin of my own to swap lives with sometimes. More than anything, they kept things real and taught me how to get through all the basics — from getting your first pimple to accidentally hanging with the wrong crowd. These two went through it all together, and you can bet I was still watching well into their college years.