Completely Different Title: French: "Les sirènes de l'amour, 1ère partie" (Sirens of love, part 1), pun on "sirène" meaning both "siren" and "mermaid".
Irony as She Is Cast: Phoebe being turned into a mermaid is ironic as Alyssa Milano is terrified of the ocean. Reportedly she only skimmed the script before approving it and didn't realise how much time she'd have to spend in the water. Despite this, the two-parter became her favorite episodes
Throw It In!: When the showrunners were unhappy about Rose McGowan spontaneously dyeing her hair, she sarcastically told them to just say that a potion blew up on Paige. So they did exactly that by having Leo mention a potion blowing up and turning Paige's hair red.
The name of Phoebe's advice column, Ask Phoebe, is given in this episode.
