Ted Cassidy, the uncredited narrator of the show's opening credits, also did the Hulk's growls for the first two seasons. When he died in 1979, dubbed animal growls were used, in addition to growls by Charles Napier.
An anesthesiologist assistant (AA) is a non-physician anesthesia provider qualified by advanced education and clinical training to work cooperatively with an anesthesiologist in developing and implementing the anesthesia care plan.
Anesthesiologists assist in surgery by determining how much anesthesia is necessary and by monitoring the patient's level of responsiveness and vital signs throughout the procedure. The anesthesia specialist will also bring the patient out of anesthesia and then continue to monitor his or her vital signs post-operation.