Trivia: Which series’ Christmas Eve special was TV’s first flashback episode?
The Brady Bunch
The Honeymooners
I Love Lucy
The Dick Van Dyke Show
The correct answer is I Love Lucy
So why is this answer correct? : In a holiday special that aired on Christmas Eve in 1956, the characters of “I Love Lucy” reminisced about some of their favorite times over the past six seasons while they trimmed the tree. Lucy (Lucille Ball), Ricky (Desi Arnaz), Fred (William Frawley), and Ethel (Vivian Vance) flashed back to Lucy’s appearance in Ricky’s barbershop quartet, Lucy going into labor and being accidentally left behind by everyone else, and several other classic moments.