Continuity mistake: Jackie gets Elton to take his shirt off by deliberately making a huge red wine stain on the front. When Elton comes back to the estate with the pizza, his shirt is unstained. (00:27:17)
The Christmas Invasion - S2-E2
Character mistake: When Llewellyn is describing what was carried onboard Guinevere One, the UNIT computer displays the space probe's name misspelled "Guinivere" One. (00:26:50)
Continuity mistake: When Indra Ganesh offers Joseph Green the briefcase with the Emergency Protocols, he's holding it with the handle in his right hand in wide shots, but with it in his left hand in close-ups of him. (00:12:36)
Visible crew/equipment: During the news broadcast on the disappearance of the Prime Minister, shown on an in-universe TV screen, the reflection of the camera filming the TV is visible. (00:12:00)
Silence in the Library (1) - S4-E8
Revealing mistake: When the Doctor notices the unnatural triangular shadow signalling the presence of the Vashta Nerada and points it out to Donna, the shadow appears over Donna when she's standing in front of it, showing that it's a special effect added to the shot afterwards. (00:11:10)
Dinosaurs on a Spaceship - S7-E3
Revealing mistake: The Doctor tells everyone to run, which they do. As they go around a corner in the distance, the actors at the rear of the group, presumably believing themselves out of shot, slow to a trot. (00:05:04)
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: After the Doctor deactivates the signal hiding the Dalek fleet, when the camera zooms out to show the ships, the background image of the Horsehead and Flame Nebulae is cut off a bit below where the Dalek Emperor's flagship is shown, revealing the end of the picture they used for a background. (00:39:00)
Continuity mistake: When Martha is walking up to the hospital just before the motorcycle gear-clad slab bumps into her, her right hand goes from by her side to holding her purse strap between shots. (00:02:15)
Continuity mistake: Rita has her right arm up in front of her while her husband is shouting at her. She lowers her arm, and in the next shot, she is holding it up again. (00:10:10)
The Day of the Doctor - S7-E16
Continuity mistake: When Clara asks Kate why her two assistants have entered the Black Archive, she rests her left arm on the sill of the window of the containment unit she's inside. In the next shot, when Clara slowly turns to look at "Kate", who's just revealed she's actually a Zygon imposter, her left arm is by her side. (00:39:55)
The Day of the Doctor - S7-E16
Continuity mistake: When the Doctors figure out how to disintegrate the door, when Eleven takes out his screwdriver to check the calculation and announces that it's complete, Ten's right hand, with which he's holding his screwdriver, goes from raised at roughly shoulder height to much lower between shots. (00:44:50)
The Day of the Doctor - S7-E16
Continuity mistake: When Osgood discovers Kate trussed up where the Zygons left her, when she pulls off the sheet covering her Kate's head is completely covered by a membrane-like mass. Moments later, after Osgood has begun working at Kate's hands to get her free, in the next shot with Kate's head in it her face is now uncovered. (00:46:15)
The Day of the Doctor - S7-E16
Continuity mistake: In the scene at the end in the Undergallery, when Ten walks up to the Gallifrey Falls painting, wondering what its actual title is, the door of his TARDIS, visible behind him, is open. In the next shot with the TARDISes visible, the door is shut. (01:10:55)
The Day of the Doctor - S7-E16
Continuity mistake: When the Eleventh Doctor takes off his fez, before throwing it into the time fissure, the position of his right hand on the hat changes between shots. (00:27:40)
Journey to the Centre of the TARDIS - S7-E12
Continuity mistake: In the storage room, when Clara takes a model of the TARDIS down from a shelf, how she's holding it changes between shots. (00:12:10)
Journey to the Centre of the TARDIS - S7-E12
Continuity mistake: When the Doctor begins to explain to Gregor that the TARDIS doesn't actually have a self-destruct, he places his right hand on Gregor's shoulder. In the next shot, his right arm is by his side and he isn't touching Gregor. (00:26:00)
Journey to the Centre of the TARDIS - S7-E12
Continuity mistake: When Gregor hands Tricky the patch from his jumpsuit, Tricky's hold on the patch changes. In addition, the patch is sagging in shots facing Tricky, but not in the close-up of it. (00:32:40)
Journey to the Centre of the TARDIS - S7-E12
Continuity mistake: Before they enter the damaged TARDIS, when the Doctor watches Gregor put down Bram, and then asks Tricky why he's using a blast suit and respirator despite being an android, his hands are clasped in front of his chest in close-ups, but down below his waist in wide shots. (00:09:15)
Continuity mistake: When the Doctor puts on a harness during the preparations to rescue Hila, a flap on the front keeps switching between being straight out and being folded behind the strap it's attached to. (00:29:25)
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.