Continuity mistake: When Liz 10 backs away in pain before asking the Doctor to stop making the Star Whale's screams audible, she raises both her hands in the wide shot, but only has her left hand up in the following close-up. (00:29:31)
Continuity mistake: When the Doctor and Amy are sitting and watching Mandy and Amy is asking what's so important about one girl crying, the Doctor has his hands clasped just below his chin, only for them to jump in front of his mouth in the next shot. (00:08:23)
The Time of Angels (1) - S5-E4
Continuity mistake: When Alistair confronts River, the two guards with him stop and point their guns at her as he walks forward, changing position between the wide shot and the following close-up of Alistair. (00:03:05)
Continuity mistake: After the Doctor finds out River's in Stormcage, when he pulls out of the pocket computer to look at the readings from the time crack, it rotates in his hand between shots. (00:19:24)
The Time of Angels (1) - S5-E4
Continuity mistake: River's position when she turns away from the door changes between the security playback the Doctor and Amy are watching and the footage shot actually on the ship. (00:03:30)
The Time of Angels (1) - S5-E4
Continuity mistake: When the Doctor leans on the glass case with the home box, he clasps his hands together. In the next, wide, shot, his hands are separated and in loose fists. (00:01:48)
Continuity mistake: When Amy reassures the Doctor that he stopped the bomb, he goes from leaning on a nearby pillar with his arm completely straight to his arm bent. And then his hand changes position a couple more times. (00:34:32)
Continuity mistake: When Churchill says "KBO" before the Doctor and Amy leave, the cigar he was smoking and just lit is suddenly missing. (00:37:09)
Continuity mistake: When Amy is floating in space outside the TARDIS, her hair is down around her shoulders in the shots of her from above, but floating around her head in the close-ups of her face. (00:03:08)
The Vampires of Venice - S5-E6
Audio problem: When Francesco says "Did you just say something about Mummy?", his lips hardly move because of the fang prosthetic in his mouth, revealing that the line was dubbed back in afterwards. (00:39:00)
Revealing mistake: When an Atraxi ship appears over the village green, there's a shot where the Doctor, Amy and Rory turn to look at it, and they're standing in bright sunshine with their shadows visible - despite the fact that the Atraxi have surrounded the planet with a forcefield that dims sunlight, so those shadows shouldn't be possible. (00:36:05)
Continuity mistake: When the Doctor throws his hands in the air and exclaims, "Who da man!?", Rory's phone, which he was holding in the shots immediately prior, is missing. (00:47:25)
Continuity mistake: After Prisoner Zero is taken away, when Rory asks the Doctor if everything is back to normal, the Doctor is holding Rory's phone in his right hand while dialing a number. In the shot immediately after, focusing on Rory, where the Doctor walks by him and lightly smacks him on the shoulder, the phone is suddenly in the Doctor's left hand. (00:50:20)
Continuity mistake: When Amelia comes out of her house with a torch to look at the crashed TARDIS, its exact position in her hand changes between shots a few times. (00:03:30)
Continuity mistake: After the Doctor spits out some yogurt that Amelia gave him and wipes off his mouth, there's still some yogurt on his face and chin. Immediately afterwards, he involuntarily jerks around a bit due to regeneration sickness, and the yogurt is gone. (00:06:35)
Continuity mistake: At one point while the Doctor is explaining to Amelia what the crack is, there's a shot where he has his hands on the wall examining the crack as he leans over Amelia's desk, then the camera cuts to a shot of Amelia where the Doctor is standing upright with his hands not touching the wall at all. (00:10:15)
Continuity mistake: When Mrs. Angelo and Jeff recognize the Doctor, leading to him learning that Amy was known for drawing cartoons of him when she was younger, he keeps changing position between shots. (00:30:05)
The Vampires of Venice - S5-E6
Factual error: Isabella is a black girl living in 1580 Venice. So how is it that she has perfectly straight hair, when modern hair care products won't be invented for centuries?
Continuity mistake: When River is talking to the Roman commander after disintegrating a piece of furniture with her pistol, she is shown raising her fingers from the pistol's grip in a shot facing the commander. However, in all following shots facing her, her fingers are still lowered. (00:17:50)
The Lodger - S5-E11
Continuity mistake: When the Doctor is flipping through a book while talking with Amy on his earpiece, in the close-up shot he's using his right hand, but in the wide shot is using his left hand, going through the pages the other way. (00:12:10)
Chosen answer: 1) When Stephen Moffat took over he ignored a lot of what had been developed before (there is not in-universe answer). 2) It would have killed Rose, so the Doctor absorbed the energy. His body regenerated before the energy could do a significant amount of damage that would prevent regeneration.