Continuity mistake: The alien's torn spacesuit sleeve somehow mends itself, but then is torn again a few shots later. (00:46:00 - 00:47:50)
Continuity mistake: General Stocker falls into a lunar quicksand pit and starts to sink. One arm disappears beneath the sand, but in the next shot, both his arms are outstretched and waving for help. (00:04:25)
Continuity mistake: In the lab, Anderson collapses with his arms crossed above his head. When the shot cuts, his arms are suddenly uncrossed. (00:21:30)
Continuity mistake: Dr. Brice's name tag is partially tucked under her collar when she's inside the lab. When she walks into the corridor, the tag has shifted position and is outside the collar. Later, back in the lab, the tag keeps changing from over to under her collar repeatedly. (00:32:50 - 00:36:50)
Continuity mistake: The cloth pillows stabilizing the moonstone on the lab counter change positions several times between takes. (00:40:15)
The Guests - S1-E26
Revealing mistake: The actress is playing chord progressions on the piano. As the camera starts to pan away, she takes her hands off the keys entirely - but the piano chords continue to play. (00:18:55)
Other mistake: Mace's chest camera sends images from impossible angles - including several that include Mace himself. At the end, his superiors watch him from a camera that's obviously mounted in a tree and not on his person. Yet when Mace smashes his chest camera, the transmission goes dead anyway. (00:48:00)
The Forms of Things Unknown - S1-E32
Continuity mistake: After running through the woods getting soaked by pouring rain, Casha arrives on Kollos' doorstep with her hair neatly coiffed and perfectly dry. In fact, within minutes of coming in out of the downpour, Casha, Leonora and Tone all have completely dry hair and clothes. (00:15:00)