In the final draft script, Chief Tyrol's final lines mentioned him moving to an island off the northern continent. At the request of Aaron Douglas, this line was expanded to include a mention of the "highlands". Ronald D. Moore, in the episode commentary, confirms that this line is intended to imply that Tyrol is the founder of Scotland.
Late in the writing process, it was realized that the "opera house" sequence could be shown to parallel the ongoing battle on Galatica. Anders' hybrid tank was set up on the CIC balcony, and it was arranged that the other four Cylons be near him, so that the "final five" could be posed in a manner similar to that shown in the opera house dream. In order for the actors to be visible at the appropriate angle, however, a safety railing had to be removed from the CIC balcony.
Two scenes which were considered and dropped regarding the Galactica. One was that the ship would be discovered on Earth by archaeological excavation. Another was to show one of the flight pods breaking off from the main ship and crashing on the moon, where it would be discovered by the Apollo astronauts.
Kara Trace quotes directly from the song, "All Along the Watchtower" as she's inputting the coordinates for Earth into the FTL drive: "There must be some kind of way out of here". The song's notes are a integral part of finding a new home for humanity and the ultimate conclusion of the show.
In the extended DVD cut of this episode, the scene where Cally interrupts Tyrol and Boomer in the workroom, then warns Tyrol to "be careful", is a deleted scene that was filmed for the original miniseries. Because of this scene, Nicki Clyne (Cally) gets screen credit for the extended cut, even though she didn't film any new material.
Towards the end of the episode, when the people are heading off in different directions and the camera slowly pans towards Karl, Sharon and Hera, if you look carefully at the bottom left of the screen, just as Karl says "There's game on this planet" an out of focus fly can be seen landing on the camera lens and move towards the corner edge of the screen.
The deleted scenes for this episode include two scenes where Tory Foster and Boomer are being "planted" into human society, after having their memories altered. Ronald D. Moore, in the commentary, indicates that these scenes will probably be integrated into Battlestar Galactica: The Plan (2009).
The trivia items below may give away important plot points.
Ronald D. Moore decided all the ships from the Colonial fleet would be destroyed by the Sun after watching a documentary about the Spanish conquistador Hernán Cortés, who burned his ships after his men reached Mexico, so they wouldn't be tempted to move back.
Events are mirrored that happened in the early moments of the Battlestar Mini-series. The final shot of the series is of Caprica Six walking away from camera into a crowd of people. In the first minute of the mini-series Caprica Six is seen walking towards the camera. Also the first and last exchanges we see between Adama and Starbuck are exactly the same. Adama: "What do you hear Starbuck?" Starbuck: "Nothing, but the rain". Adama: "Grab your gun and bring in the cat" (although in the miniseries Adama actually says "Grab your gun and bring the cat in").
According to Ronald D. Moore's podcast, in earlier scripts it was considered killing Athena and Helo so Hera would have been raised up by Gaius Baltar and Caprica Six. Baltar being killed by Cavil was considered too. It was also thought Tigh would kill Cavil, but Dean Stockwell suggested Cavil would commit suicide. The Adama and Roslin flight scene aboard the Raptor was supposed to take place in space, not on Earth, so they both would get lost between the stars. It was also considered Adama killing himself after Laura's death, but it was dropped too. Finally, they considered the fleet would arrive to Earth during the Hellenistic period, so the Colonial religion would match with the Greeks', but they decided to make Hera the ancestor of all people on Earth so they had to reach the planet during Middle Paleolithic.