Historically, every January the TV networks enter what's called "pilot season" — when they select which scripts they'll produce an episode of before deciding to move forward with a full-season order.
From top left to bottom right: 'Friends'; 'The Big Bang Theory'; 'The Golden Girls'; 'Seinfeld' ...
the 1978 pilot of Battlestar Galactica was afforded a buzzy theatrical release overseas before it aired on U.S. television. A recut version hit American box offices the following year.