Head of the Family

Head of the Family is a movie starring Blake Adams, Jacqueline Lovell, and Bob Schott. The "head" of the family is literally that - a giant head on a tiny body, who psychically controls the rest of his even weirder family.
In the midst of a torrid affair, Lance discovers that Nob Hollow's weirdest residents, the Stackpoole family, have been doing hideous human experiments in the bowels of their basement.