The ingredients for Countess Thoreaux's potion: Wings of a bat, Salamander tails, Petals of a rose, Fungus, Feet of a lizard, Cloves, Hair of two virgins, Oil of mushrooms, Twigs of a fig tree, Pomegranate juice, Seaweed.
It is revealed that Lana and Clark are both virgins, and Lois is not, in spite of Clark's time as Kal under the uninhibiting effects of red kryptonite in Metropolis. This confirms what the bartender at the Atlantis nightclub said in Exile about Clark always going home alone.
This is the last episode where Clark wears the tan jacket.
The Countess Margaret Isobel Thoreaux, more commonly called Isobel, was a infamous and royal witch of France in the early 17th century and an ancestress of Lana Lang.
In a deleted scene, Chloe unwraps Clark's large blue present, which is also from Lois; it is an antique typewriter of the same model used by Nellie Bly, Chloe's historic journalist idol.