 As Stewie and Brian decide to go berry-picking in the forest, actor Don Most slowly rises from the fog nearby as a chorus sings about his role as Ralph on the ABC sitcom "Happy Days" to the melody of the title song from "Brigadoon".Having lost their hair from the lake's pollution, the Griffins are at home wearing powdered wigs, an effect that compels Stewie to play several classical compositions, including those by Joseph Haydn and Georg Friedrich Handel, with Peter appearing as Antonio Salieri.The scene is a reference to the 1984 film "Amadeus".