... when Fox aired "The Simpsons Christmas Special". It would obviously be the precursor to what is currently the longest-running scripted television series. Unusually, the debut episode is not listed as a "pilot" but it has the episode title "Simpsons Roasting On An Open Fire."
Of course, in the late 1980's, the animated family started on Fox in segments of "The Tracey Ullman Show."
Of course, in the late 1980's, the animated family started on Fox in segments of "The Tracey Ullman Show."