The Warlock in the Gray Flannel Suit
Endora causes trouble at McMann and Tate when she has a warlock join the firm. He casts a spell on Larry, making him like all of his ideas on a carpet account instead of Darrin's. It gets to a point that Darrin quits McMann and Tate, but finds out that this is all Endora's fault.
Not on the schedule right now. See Bewitched