What happens when a cable TV channel that specializes in showing 25-year-old sitcoms turns 40 years old itself? At the risk of creating a hole in time and space and causing the entire “Do You Feel Old ...

Nick at Nite is celebrating 40 years of keeping families laughing. The beloved programming block would bring viewers from primetime to late-night with some of the best sitcoms from back in the day.

One can just imagine the brainstorming sessions that go on behind closed doors at Nick at Nite's headquarters in New York: Deep, intense discussions about Donna Reed's impact on the Feminist Movement.

Sicne 1985, viewers have been tuning in to sitcom classics NBCU Photo Bank/Getty; CBS Photo Archive/Getty; Ron Thal / TV Guide / courtesy Everett Collection Nick at Nite is celebrating 40 years of ...