The school psychologist woman here is identical to the Muller Real Estate representative from Temporary Insanity (1994). She also resembles Peggy Hill from King of the Hill (1997), which was also created by Mike Judge.
The title is taken from the 1966 top 5 novelty hit "They're Coming To Take Me Away, Ha-Haaa!" by Napoleon XIV (Jerry Samuels).
This episode has been released on "The Final Judgement" VHS tape, the Time-Life DVD release and "The Mike Judge Collection Vol. 1".