Two episodes were edited together to form the made-for-video movie Mission Galactica: The Cylon Attack. In syndication, the series incorporates the episodes of "Galactica 1980" (1980).
The opening three-part TV episode was originally produced as Battlestar Galactica (a 2-hour movie), which was released to theaters. The three-hour TV version contained a number of scenes not shown in theaters. Baltar is seemingly executed in the theatrical version but his life is spared in the television version. The television version also includes an "epilogue" in which Baltar is given his own Cylon base ship and which introduces the Cylon character Lucifer, thus setting up the weekly series. This three-hour version is now available on the DVD set of the entire series as the first episode, "Saga of a Star World".