[s4e26] Petergeist -

After Joe builds a fancy home theater, Peter attempts to one-up him by building a multiplex in his own backyard. While digging, he unearths an ancient Native American burial ground and desecrates the skull of a chief. This triggers a series of paranormal events parodying the 1982 film Poltergeist . Key Plot Points

Herbert the Pervert fights an "evil tree" in a parody of Gandalf’s battle with the Balrog.

Lois enters the spirit world to save Stewie. Upon their return, the spirits destroy the house, forcing the family into a motel.

While looking in the mirror, Peter pulls his skin off to reveal the face of Hank Hill from King of the Hill .