Revealing mistake: Grace has a present for Larry and Joe - a cement handprint decorated with twigs. She made it when she was twelve, and after a couple of decades the twigs in the cement are stick alive with healthy green leaves. (00:30:50)
Continuity mistake: When Will is sticking the white bow on the kayak present, the card is on the table. In the next shot it's in his hand.
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen