During the Jenga scene, when Cruz smack the table, a piece of the Jenga tower falls off. Then on the next take, the piece is back on top of the tower.
Dawson places a severed ear into a bag of ice. This can result in frostbite and additional tissue damage. Proper action is to wrap a severed body part in a wet cloth and place it in an ice water bath.
At one point during the cement truck rescue, Cruz is pulling the victim free and calls for assistance form "Stoltz". Christian Stoltz is the actor who plays Mouch.