“Surprise” (1998)
To give Buffy a surprise on her 17th birthday, Drusilla and Spike bring together the body parts of a dismembered demon who cannot be killed.
Buffy the Vampire Slayer / Birthday
Looking for the Birthday episodes of Buffy the Vampire Slayer? Here's the complete list, all 3 of them, with season and episode numbers so you can jump straight to the right one, plus a quick note on why each is worth your evening.
To give Buffy a surprise on her 17th birthday, Drusilla and Spike bring together the body parts of a dismembered demon who cannot be killed.
As her birthday approaches, Buffy loses her slayer powers and must do battle with a vampire who is not only extremely powerful but also quite mad.
When relatives arrive in Sunnydale, to celebrate her birthday, Tara uses a magic spell on her friends to keep them from learning her "secret." Meanwhile, Glory unleashes a hoard of demons to hunt down Buffy.
There are 3 Birthday episodes of Buffy the Vampire Slayer, from “Surprise” (S02E13, 1998) through “Family” (S05E06, 2000).
A good place to start is “Surprise” (S02E13, 1998). To give Buffy a surprise on her 17th birthday, Drusilla and Spike bring together the body parts of a dismembered demon who cannot be killed.
The most recent is “Family” (S05E06, 2000).
They're spread across 3 seasons, from season 2 to season 5.