The French title for the episode Some Assembly Required is Le Puzzle.

The stunning song which plays as Buffy leaves Sunnydale in Becoming (Part 2) is by Sarah McLachlan and is called “Full of Grace”. It’s from her album Surfacing. The lyrics are:
The winter here’s cold, and bitter
It’s chilled us to the bone
We haven’t seen the sun for weeks
To long too far …

Spike name-checks the British football club Manchester United in Becoming (Part 2).

Spike says, “Good-bye Piccadilly, farewell Leicester bloody Square” in Becoming (Part 2). This is a (slight paraphrase!) line from the song ‘It’s A Long Way to Tipperary’. It is also the title of a novel by Arthur La Burn.

In Becoming (Part 2), Spike calls humans “Happy Meals with legs” after the McDonalds children’s meal. In Choices, Buffy calls the Mayor “Mayor McSleaze”, referring to the McDonalds character Mayor McCheese.

In Becoming (Part 2), Xander failed to tell Buffy that Willow was going to perform the spell to re-cast Angel’s curse (instead he told her to “kick his ass”). This was never discussed until season seven’s Selfless, when Buffy finally revealed to Xander she knew this was not Willow’s true …

Buffy used the sword Kendra gave her in Becoming (Part 1) to send Angel to hell in Becoming (Part 2).

Angel should really learn not to trust women when they tell him to close his eyes. When he first met Darla (in the episode Angel), she told him to close his eyes and she then sired him as a vampire. In Becoming (Part 2), Buffy told him the same thing …

Outside shots of Angel’s mansion were filmed on a hill in a residential neighbourhood. The crew had to get special permission to drive a 6,000-pound crane on the street, and all filming had to be wrapped by 10am. This is called the ‘tail-lights at ten’ rule.

At the end of Becoming (Part 2), the Mutant Enemy monster (seen after the end credits) says, “I need a hug.” The events of the depressing episode were just too much for him.

In the comic and movie Blade, Blade is a half-vampire who kills other vampires and has a mentor named Whistler - which was clearly the influence for the Angel/Whistler relationship.

In Becoming (Part 1), Kendra gave Buffy Mr. Pointy, her favourite stake. Mr Pointy was mentioned in several other episodes: In Helpless, Buffy said, “Or what if I just become pathetic? Hanging out at the old Slayer’s home, talking people’s ears off about my glory days, showing them Mr. Pointy, …

Ginger Williams, who played “Girl” in Becoming (Part 1), appeared in Cruel Intentions with Sarah Michelle Gellar. She has also been in Sabrina, the Teenage Witch and Felicity.

Zitto Kazann, who played the Gypsy man who told Angel about his curse in Becoming (Part 1), played the same part in the Angel episode ‘Darla’. He was in Waterworld, a movie which was script-doctored by Joss Whedon.

Jack McGee, who played Doug Perren (the curator at the museum in Becoming (Part 1)), has also appeared in Legally Blonde 2: Red, White & Blonde, Malevolent, Man Who Wasn’t There, The, Coyote Ugly, The Flintstones in Viva Rock Vegas, The Out-of-Towners, Showgirls, Basic Instinct, Backdraft, The Doors, Born …