Shay

Consequences - S3-E15

Other mistake: When the detective is interviewing the woman in the alley he says "So you heard the man scream about what time?", but Finch didn't scream as he died.

Shay

Halloween - S2-E6

Other mistake: When Buffy and Willow find the picture of the noblewoman in the Watcher's Diaries, Buffy asks "Who is she?" and Willow replies "It doesn't say", but if you watch closely you can see that during the brief shot of the book her name is visible next to her picture.

Shay

Anne - S3-E1

Other mistake: In the episode 'Anne' Kenn tells Buffy that time in his hell dimension passes more quickly, that one day on Earth is the same as 100 years in his dimension. This means time goes roughly 36,000 times quicker. When Lily falls into the portal, it's at least 10 seconds until Buffy jumps in after her, but Lily is still just sitting there looking stunned. If times moves that much faster, 10 seconds would become over 4 days. Would Lily still have been just sitting there?

Shay