Mr. Monk Paints His Masterpiece - S6-E14
Factual error: When Stottlemeyer and Randy are at the painter's daughter's home they find a picture showing him in front of Carson papers, which leads the Captain to say: they have a contract with the treasury, they are producing the paper for the U.S. currency. This is wrong: the treasury is not in charge of printing the Federal Reserve Notes. Rather it is the privately owned Fed that prints the Federal Reserve Notes and then lends it to the treasury at interest. And the interest added is the reason why there will never be enough money to pay the interest, i.e. the state debt.
Suggested correction: While the Federal Reserve is in charge of maintaining our currency (through the creation or destruction of currency, real or digital), the U.S. Department of Treasury is in fact responsible for printing money, through the Bureau of Engraving and Printing.