Futurama Season 1, Episode 6: A Fishful of Dollars

When Fry discovers that he's a billionaire thanks to a thousand years of compound interest (on 93 cents), he uses the money to buy back things from his time. This includes spending millions on a can of anchovies, which are extinct in the year 3000. Mom, head of Mom's Friendly Robot Company, wants the anchovies for very different reasons.