Bart makes up a song to the tune of "Colonel Bogey's March."
The scenes at the mental hospital
Mentioned by name; Song whistled by Bart
Mentioned and the album was shown briefly.
Floyd, the idiot savant
Hannibal Lector appears in the mental hospital
Homer's background check includes his admittance to an insane asylum
Reference to the episode with Michael Jackson
"Michael Jackson" performs this in the Mental Institution
Homer watches a violent version of this show on TV