During the session Tony has with Dr. Melfi after A.J.'s swimming pool incident, the pearls around the doctor's neck shift back and forth from under her blouse to on top of it.
During the "mothers are bus drivers" conversation between Tony and Dr. Melfi, the position of her wardrobe, especially her jacket, blouse, and necklace, change dramatically from cut to cut.
Little Carmine tells Tony he treated his daughter's anorexia with a psychologist when she should've seen a psychiatrist. Psychology and psychiatry are two different disciplines.
Elliot uses the term "sociopath", which is a non-clinical term often used by laypeople but rarely, if ever, by clinicians. "Psychopath" is the correct clinical term.