I watched Donna on Nick at Nite in the 80s!
OT, sorry: To answer your question, recently, I have gotten a sense of just how much knowledge of past pop culture has diminished in recent generations. As a child, I was familiar with the shows on TV during the 80s (Magnum, Miami Vice), the shows from the 70s that were in reruns (WKRP, Laverne & Shirley), and then the the oldies from the 50s and 60s (Donna, The Beaver). Nowadays, there is a whole genre of videos on Youtube where Millennials react to old pop culture they know almost nothing of. It's sad watching twentysomethings show their lack of knowledge of pop culture that I took for granted even as a child.