Once More, With Feeling - S6-E7
Corrected entry: In "Once More, With Feeling" from season 6, everyone sings and dances because the demon Sweet is in Sunnydale, but after he leaves, everyone still keeps singing and dancing.
Lies My Parents Told Me - S7-E17
Corrected entry: In the episode 'Lies My Parents Told Me' Spike and Dru are waiting for Spike's mother when the enters her living room, but how did they get into the house? Even entering his former home a vampire needs an invitation, and since she was surprised to see them she couldn't have been the one who let them in.
Correction: If no living person claims ownership of the house then vampires can enter as they please. Seeing Spike with his mother it is probably safe to assume that it was his house and she was a long term guest not an official resident.
Corrected entry: In the opener of season 6, Buffy has to dig her way out of her own grave because the others were driven away before they could finish the spell and don't know she's alive, but what were they planning to do if they had finished the spell? They had no shovels to dig her out, so were they planning on bringing her back to life then letting her asphyxiate in her grave?
Correction: They accept later it was a badly thought out plan.
Corrected entry: In "Becoming Part 2" Spike cuts off Drusilla's air to render her unconscious, so that he can take her with him when he flees. But it's been established throughout the show that vampires don't need to breathe, so his choke hold should not have had any result.
Correction: There are two kinds of chokes Spike could have used: the air choke and the blood choke. The air choke is obviously a way of suffocation and knock out, as well as murder. The other is the blood choke. This compresses the carotid arteries on the sides of Dru's neck, leading to her passing out due to lack of blood supply to the brain. As it has been occasionally mentioned that vamps don't breathe, and the two chokes are almost identical in appearance, Spike certainly seems to have used the blood choke.
Conversations With Dead People - S7-E7
Corrected entry: When Willow is talking to Cassie in the UC Sunnydale University Library, Cassie said she was sent to talk to her by Tara. Cassie says "she still sings the song you sang to each other on the bridge", referring to "Once More with Feeling". But Willow only sang 2 lines in the that episode. In "I've Got a Feeling", she sang "Ive got a feeling some kid is dreaming and were all stuck inside this wacky broadway nightmare", and in "Walk Through the Fire", she sang "I think this line's mostly filler".
Corrected entry: When Ben is being stalked by the demon while he's at his locker, he's wearing his medical clothing. Yet, moments later, when Glory grabs the demon from behind, she's back to her usual red dress and make up. If Ben and Glory were truly the same being in that moment, they would be wearing the same clothes, too.
Correction: In "Tough Love," Glory shows that she can change her clothes in an instant when her dress gets damaged in the fight with Willow and she replaces it. Same goes for makeup.
Corrected entry: In the episode 'What's My Line Part 1' Spike says the ritual to restore Drusilla's health must be done on the night of a full moon, but in 'What's My Line Part 2' Giles says the ritual will take place on the night of a new moon.
Correction: In Sweet's song, right before he leaves, he says "say you're happy now, once more with feeling." He's cursing them to do one more song.