Charles Napier's first to provide the the Hulk roars and growls, for the remainder of the run.
This episode was unusual in that when the Hulk transforms back to David (while the patients are watching), the usual transformation music doesn't play. Instead, the transformation happens in silence (other than the mutterings of the patients witnessing the transformation).
The movie playing on TV in the patients' rec room was Frankenstein meets the Wolfman.