Carol mentions that her friend Martha, who is never seen but to who she speaks often on the phone (season 1 only), has the surname Sheldon.
Beebe Gallini is based on Coco Chanel.
Ms Gallini's secretary, Duane, played by Joe Ross, is a flamboyantly gay man, although no acknowledgment of his sexual orientation is made.
The title is based on the word horoscope which is an astrological prediction of future events based on birthday, date and the placement of the stars and planets in the sky.