Continuity: In the episode 'Angel', during the climax at the Bronze Buffy puts down her crossbow and walks towards Angel, about 5 steps. When Darla bursts in a few seconds later the crossbow is back at her feet.

Audio problem: Buffy's scream and Joyce's scream are completely identical. The same scream was obviously used for both of them.

Continuity: Vampires can't enter a house unless invited. Throughout Buffy this appears to be some kind of force field, as if the vampire has run into a brick wall. But in this episode, the vampire chasing Buffy and Angel gets its arm through Buffy's front door.

Revealing: When Darla is spying on Buffy and Willow in the library, her reflection is seen on the side of the bookshelf.

Continuity: When Buffy leaves the Bronze (right before the Three attack her) to go home, she passes a strange-looking green-lit window. After the attack, she and Angel run past this window again, even though they're heading in the same direction Buffy was going anyway.

Plot hole: When Buffy and Angel are running away from The Three, Buffy invites Angel in just before he reaches the door by saying something along the lines of "Get in. Hurry." After they enter, they slam the door shut on the arm of one of The Three. Though his name isn't spoken, the invite was just for Angel. It has been shown in other episodes that you don't have to say the vampire's name to invite them or even single their invite out among a group (i.e. Dawn inviting Harmony, but not her gang, in the fifth season.), so how was the member of The Three able to break the threshold with his arm?