Pizza Forest
Pizza Forest is a nightmarishly cheerful 'family' chain restaurant, where people dressed in soulless furry woodland suits sing "ROW ROW ROW YOUR BOAT" at you until you break.
In "Esteemsters", Daria manipulated her parents into taking the family there so they could "suffer" - as they wilted under the singing, Daria encouraged it to continue.
In "Of Human Bonding", we learned Terry Perry Barlow had made $40 million from creating and selling the franchise.