When Franco sits down with Rich to play checkers, Rich has one black checker piece and Franco has one red piece on their front rows. After Rich moves the black piece, the camera angle changes and the two pieces have switched colors.
Sheila says she has 3.6 million in the bank because her 9/11 widow payment accumulated interest in 5 years. In fact 9/11 widow payments were about $300k and interest rates at the time was 5%, so the most the money could have grown into in 5 years was about $400k. There would have been no way for her to have that much in the bank from that widow payment.