Continuity mistake: When Buffy's mom sets down the carton of orange juice on the table after the golf trip, watch closely. The continuity is nightmarish. The carton rotates multiple times between cuts. The cap is on, then off, then back on again between cuts. And Buffy's mom's hand keeps moving on and off the carton between cuts.
Continuity mistake: After the mini-golf scene, Buffy comes down to her kitchen. Her mother greets her and sets down a carton of orange juice. In the first shot, her mother is holding the carton with both hands. But in the next shot as she sets it down, she only has one hand on the carton.
Continuity mistake: When Buffy, Xander and Willow are talking at the school near the beginning in front of the vending machine, watch the way Buffy is holding her pink binder. First she's holding it to her side, but shifts it in front of her chest. Instantly, in the next shot it's back by her side. Then it's back in front of her chest again.
Revealing mistake: In the beginning of the episode, when Buffy stakes the vampire that she beats up for a long time, watch when she lifts the stake. The hole in the vampire's chest is a solid 8" below where she actually hit him with the stake. (It's an effects shot, so somehow, they just didn't line up).
Continuity mistake: When Buffy puts her egg down, the position of the chain and pen she sets it down by change depending on whether the shot's from Willow's side or Buffy's. (00:08:40)
Continuity mistake: Right as Buffy gets out of the car and watches Joyce drive away, Cordelia and her friend are walking up the stairs, along with a girl in a blue shirt at the top of the stairs walking towards the school. The next shot Buffy is walking towards the stairs, Cordelia is already far away chatting with her friend and the girl is blue is back on the stairs again. (00:27:00)
Revealing mistake: At the very beginning of the episode, Lyle's reflection can be seen in the tiles on the floor in the shopping mall.
Other mistake: When Buffy and Angel escape from Spike, Dru and the Judge they jump down into the sewer, then run all of five metres before going up the ladder to escape. When they come out of the sewer they are in a very open area with the factory nowhere in sight. They have not travelled far enough for this to be the case. (00:39:15)
Continuity mistake: Near the beginning when Buffy and Willow are talking about Willow getting together with Oz, Buffy's hair is in front of her ears. Then she turns to face Willow to say, "You think he's too old 'cause he's a senior? My boyfriend had a bicentennial," and in that shot change, her hair switches to behind her ear then goes back to being in front of her ears in the next shot without her every touching her hair.
Character mistake: In this episode, Buffy says that Drusilla could be alive because they 'never saw her body'. Drusilla is a vampire; if she was dead, there wouldn't be a body to see - as the slayer, Buffy knows this.
Continuity mistake: When Buffy wakes up she is wearing metallic nail polish, yet when she went to sleep previously, she has no nail polish on. Later in a scene where Buffy is dreaming about her night with Angel she has the nail polish on again, even though that took place the night before when she did not have her nails painted. (00:01:15)
Continuity mistake: In Innocence, when the Scoobies are in the library, Oz (I think) says for the crew to meet outside Xander's house a half hour later. Then we cut to Buffy strolling through Sunnydale High in broad daylight, then back to Oz's van outside the military base and it's last night again. (00:23:15 - 00:29:20)
Other mistake: When Angel, Drusilla and The Judge enter the mall, The Judge kills a pedestrian as he tries to get away. But no other pedestrians that are in the mall notice - A big blue guy just set a man on fire and disintegrated him into tiny pieces in a public mall and NOBODY noticed?
Continuity mistake: The book that Cordelia replaced sideways in the bookshelf behind her disappears, and then reappears just before she and Xander kiss.
Revealing mistake: In the scene where Drusilla and the new reformed Angelus are in the shopping mall and they got blown over the side after Buffy fires the grenade launcher at the Judge, you can tell that it was Mike Mass and not David Boreanaz that got blown over the side.
Continuity mistake: When Willow catches Xander and Cordelia kissing in the library, the hair next to Willow's right ear moves between shots as her and Xander are talking in the hallway.
Continuity mistake: When the Judge is blown up, Drusilla and Angel leap from the balcony. In mid-air, they somersault and their backs are facing the ground as they fall, but a second later they land on their stomachs.
Chosen answer: Angel is saying that he is still jealous and Buffy recognizes that this is his way of saying he wishes that they could be together. That is why they both smile.