Corrected entry: When Harry, Ron, and Hermione are in the library, Hermione find the Polyjuice Potion 'recipe'. Hermione looks down at it and you see a shot of the page. If you pause the movie right then, you can see that it says "...Into the form of an another," when it should say "...Into the form of another." There is an extra 'an'. (00:52:40)
Corrected entry: Moaning Myrtle floods the bathroom in one scene by turning on the taps, but ghosts can't touch solid objects.
Corrected entry: When Harry and Ron go and see Lockhart, they get out their wands and point them at him to prevent him from doing anything to them. But seeing as they are in their 2nd year and Lockhart is a fully trained wizard, wouldn't Lockhart be able to cast a non-verbal spell on them - (non-verbal spells are taught in the 6th year).
Corrected entry: Tom Riddle's writing in the diary and Hermione's writing (pipes) are exactly the same, clearly done by the same crew member. (01:28:20 - 01:53:25)
Corrected entry: When the flying car is about to land in front of Ron's house, we can see its shadow to the car's side (which indicates that it's morning). In the next shot, the shadow is exactly under the car (which indicates that it's noon). (00:10:40)
Corrected entry: In the scene in the Weasley's house there is a magically spinning plate in the sink washing itself. In the shot where the boys are shown in front of the sink look carefully and you can see the axle the plate is spinning on. (00:11:10)
Corrected entry: In the scene where Tom Riddle is writing his name in the air using his wand, play it in slow motion and you can see some letters (Particularly the "A" in "Marvolo") are written before Tom writes it with his wand.
Corrected entry: On the Extras DVD, in the Chamber of Secrets Challenge, once you actually get into the Chamber, there are lots of puddles on the floor. If you look closely at the puddles, you can see the reflection of the studio lights above the set.
Corrected entry: In the scene where Wood is discussing how his team will practice harder, long, etc., he then says, "I don't believe it," as the Slytherin team comes into view. To his right while he was saying this is a huge wall and the Slytherins were coming from the right as well. How could he have seen them before he made this comment?
Corrected entry: Why does Hogwarts have modern (muggle) toilets? I know that it is a main focal point for the plot, but if the school is really as old as they say, it surely wasn't built with them. They must have had some magical method of waste disposal (the 'scurgify' spell), and surely a way to create water, so why resort to installing plumbing and a (supposedly inefficient) muggle technology. They don't use electricity, Television, Internet, etc., so why plumbing?
Corrected entry: When we see Ginny lying in the chamber of secrets and again once she has awoken she has bare legs or flesh coloured tights on. However as they fly out of the chamber, Ginny is now wearing black tights.
Corrected entry: The basilisk is supposed to be moving through the plumbing, but when it petrifies people it's in a room or hallway. How does it get out of the plumbing and into the room? It's too big to fit through a tap, drain or toilet. If it has to knock a hole in the pipes and walls to get out, surely someone would have noticed gaping holes everywhere?
Corrected entry: Look at the blood writing on the wall. Tom Riddle says that it was written by Ginny, but you can see that it's too high for her to write - we see a flashback of Ginny writing the blood on the wall, not standing on a chair and clearly not standing on a ladder.
Corrected entry: In the scene where Ron & Harry notice the hallway to the girl's bathroom has been flooded, there is a depth of one inch or so of water in the hallway. When the boys step into the bathroom there is water on that floor as well, due to all the sinks overflowing with water and all the faucets turned on fully. But if you notice, there are drain grates surrounding the base of the washroom sinks extending a good 2 feet or more. There is no water coming out of these grates, indicating that the overflow hasn't reached capacity yet. If the grating is higher than the surrounding floor, and no water is exiting the grating, then it's impossible to flood the hallway. If the grating is lower than the flooded hallway, it's also impossible for the flooded section to not flow back to lower ground, namely the lower section of grating underneath the sinks.