The Living Legend (2) - S1-E13
Continuity mistake: After the Colonial assault force parachutes into the Cylon city and Boomer says, "Shouldn't take too much to blow 'em sky high," they race off to the left - and Apollo's sky diving helmet disappears from one shot to the next as they run.
The Living Legend (1) - S1-E12
Visible crew/equipment: Near the end of Part 1, when Lucifer reports to Baltar that they've located the scout vessels, there's a fuzzy reflection on the back wall of some sort of equipment moving upward and to the left. Nothing in the scene itself is moving that way.
The Lost Planet of the Gods (1) - S1-E4
Deliberate mistake: At the beginning, the scene in which Baltar is granted a Cylon base ship is recapped from the end of "Saga of a Star World." Only the lines are edited into a completely different order than they were before.
The Living Legend (2) - S1-E13
Continuity mistake: When Baltar sees the Pegasus, it is approaching with her bow toward Baltar's port side. The next exterior shot shows Baltar's ship heading with its bow toward Pegasus' starboard side, as if Baltar's ship reversed, letting Pegasus pass in front, then went forward again and veered sharply right to avoid collision. (00:04:10)
Continuity mistake: In "Saga of a Star World", it's established that the Cylons are entirely robotic. Their creators, a reptilian race also known as Cylons, were made extinct by their robots millennia ago. Yet, when Omega reports that life signs have been detected, Apollo asks "Cylons?". Apollo is the character that previously explained their history, so he knows Cylons aren't life forms. (00:06:55)
Revealing mistake: In the opening scene, the canopy of Starbuck's viper is not fully lowered while in space flight, leaving a wide gap under its starboard side that would have allowed his air supply to be instantly sucked out into the vacuum of space. (00:02:50)
Greetings from Earth (1) - S1-E19
Factual error: Michael's ship escapes from the landing bay into space - with a crowd of people standing right next to it. No one is at all adversely affected by the launch and the vacuum it should have exposed them to. It barely ruffles their hair. (00:40:00)
Saga of a Star World (1) - S1-E1
Continuity mistake: While driving the Land Ram, looking for a Tylium deposit, and Apollo says "We can't stay in one place for too long", Boxey's arm goes from leaning on Apollo's shoulder to not leaning on his shoulder between the shots. (01:20:10)
Visible crew/equipment: At the end, when Apollo leaps over the console to tackle Chakra, the stunt double's face is visible. (00:41:00)
Greetings from Earth (2) - S1-E20
Continuity mistake: When Hector and Vector first arrive, Starbuck and Apollo are standing about a foot apart. Every time the shot cuts to a closer angle, they're shoulder-to-shoulder with no space in between. (00:07:20)
Continuity mistake: When the Celestra's joystick is hit by laser fire, it tips to the right and the ship lurches off course. An exterior shot shows the landing bay is pitch dark. When the ship is forced back on course, the next exterior shot shows the bay is very well lit. (00:44:10)
Continuity mistake: The exterior shots of Commander Kronus' shuttle show that all its side windows are transparent, like all Galactica shuttles. But the interior views show that its second starboard-side window is actually an opaque gray panel, not transparent as seen from outside. This is because the exterior shot is of a Galactica shuttle (no model was built to represent Kronus' shuttle). Also note the impossibly high interior ceiling at the very front, compared to the exterior shape. (00:29:40)
Factual error: Apollo's monitor picks up the "Tranquility Base here: the Eagle has landed" message of the first moon landing, complete with a full shot of the LEM sitting on the moon's surface - not from the onboard or outboard cameras, but from several yards away. There's absolutely nothing to indicate that this is some edited rebroadcast (that's one stretch of a rationalization). The implication is clearly that it's live. And when the Eagle first landed there were, of course, no cameras on the moon. (Nor is it necessary to insist that the series would have to be set in the Earth-time 1960s for this to be so. A live signal could take many, many years to reach the Galactica.) (00:43:30)
Continuity mistake: As Galactica attacks a Cylon base star, she is shown banking to port with the base star off her starboard bow. Seconds later, the base star is to port and Galactica is banking to starboard, yet no course change has occured. (00:11:30)
Greetings from Earth (2) - S1-E20
Deliberate mistake: In a wide shot Cassiopeia announces it is time for the children to go to bed, and they react with normal hoots of false shock and whining. Then the shot changes to a close-up and the same moment repeats, with the children again seemingly surprised and dismayed by the announcement. (01:02:00)
Continuity mistake: The shuttle belonging to Commander Kronus is described as being a non-military version, differently equipped than are the Galactica shuttles. But an exterior shot shows the shuttle to be 'GAL 356' yet again, which is the most-often-used Galactica shuttle. (00:28:15)
Continuity mistake: When Apollo changes course, he pulls the joystick back and the shuttle seems to 'pull up' in the inside shot, but the next exterior shot shows the ship is turning to starboard, not rising. (00:34:25)
Continuity mistake: When Apollo launches the shuttle from the Celestra, the close-up of the joystick shows he is in a Viper, not the shuttle. (00:27:30)
Deliberate mistake: When the Cylon ship rams the landing bay and explodes, the many quick-cut fiery destruction shots are lifted from a classic World War II film (possibly "The Guns of Navarone"). Note the stone walls (and the tanker truck just left of center in the second such shot). (00:08:05)
The Living Legend (2) - S1-E13
Revealing mistake: When Pegasus evacuates her wounded on shuttles, one shot has a shuttle entering the picture from the right, heading away from camera. It is a Galactica shuttle, and the image is reversed (the "GAL 356" marking is backwards). (00:42:30)