The scene in which Anya is possessed by the demon ghost and slashes her face several times while laughing maniacally was trimmed by SkyOne for the UK broadcast to show her laughing and then collapsing, editing out the face-slashing.
When Spike sees Buffy's injured hands in this episode, he says that he knows how it feels to claw your way out of your coffin, since he had done it himself. In Lies My Parents Told Me (2003), it is revealed that his mother did not know that he was dead, so she could not have had him buried; though, in Reunion (2000), Drusilla buries a recently bitten Darla in compost, and Angel states that she has a habit of burying newly made vampires. This indicated that she may also have buried Spike after she bit him.
Early in the episode, furious that the Scoobies concealed their plan to resurrect Buffy, Spike grabs and briefly manhandles Xander, despite the implanted microchip that prevents him from harming humans; on close examination, Spike can be seen to wince from the pain the chip inflicts for his actions, but he is so angry he does not care.
This is not the first time we see Buffy's backyard. We have seen it in previous episodes from season 3, most notably in Dead Man's Party (1998) when Buffy and Joyce bury the zombie cat, and again later on when Oz steps out onto the porch. Plus, the yard is also seen in Real Me (2000) and Out of My Mind (2000) in season 5.
Though knowing that the two witches (Willow very mostly) are responsible for Buffy's resurrection - and being after all glad by this - Spike accuses just Xander to have violated the nature's laws.