Third and final appearance of Jeffrey Tambor. He previously appeared in two other episodes in two different roles, Winston Cromwell III (s. 5 , ep. 13) and Dr. Tom Miller (s. 6 , ep. 7) and also played the role of Jeffrey P. Brooks III on The Ropers.
At the dentist's office Jack playfully sits on the children's spring horse because there is nowhere else to sit. He has a hard time staying on the horse. When Jack gets off to let a young boy sit on the horse he says to the boy "Watch him Tex he's a mean one". Tex was the name of John Ritter's father.
Jeffrey Tambor wears a toupee in this episode.
After the receptionist at the children's dentist refers to Jack as "Jackie Tripper", Jack corrects her and says his name is "Jack. E. Tripper".