 The scene with Grampa and Bea eating their pills seductively is a reference to the 1963 film Tom Jones. Two of the people waiting in line to ask for Grampa's money are Darth Vader and the Joker. When the family is suggesting places they could go, Homer suggests the Springfield Mystery Spot, a reference to the Mystery Spot in California — although Lisa says that the Springfield Spot is simply a puddle of mud. They eventually decide to go the Discount Lion Safari, however. The Diz-Nee-Land amusement park that Grampa visits with Bea's money has a sign that reads "Diz-Nee-Land — Not affiliated with Disneyland, Walt Disney World, or anything else from the Walt Disney Company". The shot of Grampa sitting at a diner resembles the 1942 American painting Nighthawks. Before Grampa attempts to bet all of his money on Roulette he quotes the poem "If —" by Rudyard Kipling. The climax scenes, where Grampa uses the money to fix up the Springfield Retirement Castle, is a reference to the ending of the 1932 film If I Had a Million. Dr. Marvin Monroe's' Monroe Box 'is meant to be a spoof of B. F. Skinner's Skinner Box.
