Corrected entry: Once a human has been bitten by a vampire, it seems that the time it takes to change into a vampire is very aleatory. Most of the time, it happens once buried, but other times (like episode "Helpless") it's only a few minutes/hours later, and some other times, it's even a few days later.
Corrected entry: In the final episode, Willow turns all the Potential girls into Slayers, so they can fight the army of uber-vamps. This is obviously wrong because of episode 7.11, "Showtime", when one uber-vamp alone beats the bejeezus out of experienced slayer Buffy. There is no way 30 or so newly-formed slayers could've taken out thousands of uber-vamps, much less the humans who kill several themselves.
Correction: This has already been addressed. The reason that the first Ubervamp was so difficult was that they weren't sure how to kill it. Buffy thought it couldn't be staked; turns out she just needed to put much more force behind the blow. When the Potentials become Slayers they have the same strength. Buffy was also forced to fight the first Ubervamp without weapons. When the ordinary humans are fighting at the end they are all armed with heavy blades to decapitate the vamps.
Corrected entry: On both occasions in season 7 prior to "Chosen", whenever blood is spilled on the seal of the hellmouth, an ubervamp is brought out as the seal opens (e.g. when the First bleeds Spike; when the demon girl bleeds Xander). But, in "Chosen", when Buffy and the Potentials cut their hands to open the seal, no ubervamps are waiting to come out. Instead, the seal opens to reveal a set of stairs that lead them down to where the ubervamps are. That is the only way the Slayers could get to the vamps to surprise them, and the only way the whole ending with Spike could happen, but it isn't consistent with the rest of the season and what happens when blood is spilled on the seal.
Correction: The other episodes, the "First" planned the openings. They guided the people there. And there was a bit of a ceremony, maybe to call an ubervamp to the seal. But, in "Chosen" Buffy and the potentials took the fight to them. The opening was their plan, not guided by anyone or anything.
Corrected entry: In the scene where Buffy and the rest of the gang are down in the Hellmouth, one of the slayers says ''I'm zipping back to Xander's whole bathroom speech'' - Xander didn't have a bathroom speech at that time. Xander did have a bathroom speech at one time but that was when Riley came to see Buffy.
Correction: When they all entered the school, Xander said 'Anyone who has to go to the bathroom, please go now.'
Corrected entry: In season 2, 'School Hard', Spike tells Buffy that the last Slayer he killed begged for her life. In season 5, 'Fool For Love', we see Nikki's death, and she doesn't say a word to him from the start of the fight to her death.
Corrected entry: The hole in Anthony Stewart Head's left earlobe is frequently visible throughout the show, but an earring would be totally out of character for Giles - even if he had gotten one during his rebellion in his 20s, it would be almost entirely healed over by the time we see him in Sunnydale, whereas the hole is obviously in regular use.
Correction: Nope. Plenty of people have piercings that never close up, period. I have several family members with piercings from over 15 years ago that never closed up at all.
Corrected entry: Xander is visited by what he believes is himself from the future. We later find out it is a demon that used to be a man, but Anya had changed him back in her demon days. But when Giles destroyed Anya's pendant in 'The Wish,' it supposedly reverted all of her previous spells, which should have made him human again.
Correction: The demon in question was trapped in another dimension when the reversal occured, and as such might not have been affected by the spell. We've seen several times throughout the series that different dimensions work in very different ways (for example, the time-flow in "Anne"), so it's not definite that magic would cross over between them.
After Life - S6-E3
Corrected entry: Spike mentions that he knows what it's like to claw your way out of a coffin, but this is later contradicted in "Lies My Parents Told Me", when we see that Spike was never buried (or else his mother would have known he had died).
Correction: Spike is lying. He is trying to score a few easy points with Buffy and change the way she feels about him, so he makes up a story that they have some horrible experience in common. Easy sympathy points. We also don't know every situation he's ever been in - he might have clawed out of a coffin on another occasion.
Corrected entry: When Xander and Ampata are attacked by the bodyguard on the bleachers, Xander's bag is knocked over and rolls down about 4 rows. Seconds later, when they stand up to run away, the bag is right beside his feet again. (00:20:25)
Correction: When they are attacked the bag rolls down a few rows but then the bodyguard knocks Xander a few rows down so he would be equal with the bag when he gets up.
Corrected entry: In the scene where they look through the window into the room with thermal cameras, there is a big mistake: Thermal cameras can't see through windows.
Correction: This just isn't true. Depending on the type of glass, windows may or may not absorb or deflect IR radiation (heat). Industrial and military IR scopes/goggles can also be tuned to enough sensitivity to nonetheless provide an image. Moreover, advanced scopes can combine signals from multiple sensors at differing sensitivities in order to allow a more complete image.
Corrected entry: Everyone who writes on a white board does it with the same handwriting. (00:20:30 - 00:29:20)
Revelations - S3-E7
Corrected entry: At the end of the episode, we find out that Gwendolyn Post was kicked out of the Watchers' Council for misuse of dark power and that the Council had informed everyone of the fact via memo. If that's the case, then why would she use her real name when she arrived in Sunnydale? Wouldn't she be worried that Giles would recognize her?
Correction: Giles says the Council "swears there was a memo." It's quite possible that this was just the Council trying to cover itself, since there was no communication to agents in the field - the event was so obvious to people in the Council that they didn't think it necessary to make a specific communication about it.
Reptile Boy - S2-E5
Corrected entry: The frat house is a place of residence. Angel should not be able to enter without an invitation.
Correction: The frat boys wouldn't own the frat house which seems to be a factor in deciding if a vampire can enter a residence. Sunday & her vampire followers could get into Buffys room when she was at the university without an invite.
Corrected entry: In this episode when everyone is in the Library and they find out that Buffy can hear thoughts, Buffy turns to look at Wesley because he is thinking about Cordelia. As she leans forward she rests her chin on the heel of her hand, the shot cuts to Wesley, then back to Buffy and she has her chin resting on the top of her hand (the knuckles), Wesley then goes into the office and it cuts to a shot of Buffy and Willow, Buffy is once again resting her chin on the heel of her hands. (00:20:30)
Corrected entry: Katie Holmes was originally asked to play Buffy, but turned down the part. Sarah Michelle Gellar audtioned for Cordellia and Charisma Carpenter (Cordellia) auditioned for Buffy. After Sarah Michelle Gellar was turned down the part for Cordellia, she auditioned 4 times for Buffy before landing the part.
Correction: If you watch the interviews with Joss Whedon, Sarah Michelle Gellar actually DID get the part of Cordelia, and she asked to try out for Buffy. The network was hesitating, but she finally talked them into it.
Corrected entry: Room 314 is supposedly in a high security sector of The Initiative which needs to be accessed by a keycard, but in "Goodbye Iowa" all the soldiers are gathered around the door of it to see Walsh's body. How did they get in there? (00:13:45)
Correction: Assuming that the scientists working with Maggie aren't expecting her to be lying dead in the room then the first person to enter the room would most likely stop at the doorway in shock. After that all it takes is for people to stop at the door wanting to see whats made this person stand there & it would snowball from there.
Corrected entry: Anya is introduced as Anya Emerson, but in subsequent episodes ("Checkpoint", "Selfless" etc.) she is always referred to as Anya Jenkins. There is no logical reason for her name to have changed since she was still trapped in the same persona.
Correction: As she says many times after season 3 - she made up the name Anya Jenkins. If she didn't intend on staying in Sunnydale in the first place - what difference does it make if she changes it.
Corrected entry: In 'Graduation Day, pt 2' Percy and guys who are presumably other students are fighting at Angel's side, but shouldn't they have been at the ceremony with the others? Even if they just didn't show up there would have been noticeable gaps in the seating, but in all the previous shots every chair is filled. (00:28:55 - 00:34:55)
Correction: Buffy would have used other students from within the school to fill in certain seats (probably at the back where it would be harder to recognise them).
Corrected entry: In 'Consequences' how did Wesley know that Faith would be with Angel, or where Angel lived? One episode earlier he didn't even know Angel's name. (00:34:00)
Correction: We know that Giles has researched Angel in the past, and he probably kept this information updated, either in his Watcher diary or somewhere else. We know that Wesley has access to the diaries (we even see him reading them) and the rest of Giles material so if the information was there he just had to go back and find it. Also Xander hates Angel so if Wesley came to him and asked him Xander would likely tell him to get one over on Angel.
Corrected entry: The Mayor, near phobic about germs, doesn't even react when Faith picks up a cookie in his office, takes a bite out of it and puts it back in the pile. Someone as obsessive as him would surely hate the thought of half-eaten cookies being mixed with the fresh ones. We know he plans to keep the cookies since he covers them over with clingfilm later in the scene.
Correction: This is to show how he feels about Faith.
Correction: Since the transformation requires that the victim drink the blood of the vampire, the time of transformation could be relative to the amount of blood taken from the vampire. Since we never actually are told how much blood or exactly how much time it would be hard to know exactly.