Life Serial - S6-E5
Revealing mistake: In Jonathan, Warren and Andrew's van, whenever they're watching something on the monitors fed from their security cameras, you can see that the footage is actually pre-recorded due to the fact that the footage is being played through QuickTime media player.
Life Serial - S6-E5
Continuity mistake: While working at the Magic Box, Buffy's horseshoe necklace constantly shifts between left, middle, and right positions, even within the time loops. (00:20:20)
Life Serial - S6-E5
Continuity mistake: Warren switches from holding Jonathan's magic bone with one hand to two hands between front and reverse shots. (00:19:10)
Life Serial - S6-E5
Visible crew/equipment: When Xander is talking to Buffy about blacking out and evil lint before introducing her to the foreman at the construction site, a crew member can be seen walking behind them holding up an anti-glare screen. (Only visible in widescreen.)
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.