That was a great episode! BattlestarGalactica.com says this:
"Actor Dirk Benedict (Starbuck) did return for one episode, "The Return of Starbuck." Considered one of the best episodes of both Galactica: 1980 and Battlestar Galactica, it borrowed heavily from Barry Longyear's Enemy Mine concept. A flashback sequence depicted a fierce battle in which Starbuck's Viper was mortally wounded, leaving him marooned on a nearby world with a similarly marooned Cylon Raider. The Galactica was unable to send any rescue parties as the Cylons mercilessly battered the fleet. The episode portrayed brilliant, passionate performances by Lorne Greene (Adama), Herb Jefferson, Jr. (Boomer) and Mr. Benedict. And, ironically, the episode was the final Galactica: 1980 episode aired. The show was cancelled during the actual filming of the subsequent episode, "The Day They Kidnapped Cleopatra."