Continuity mistake: In the scene where Sam is trying to make his escape from the Sky Ranch with E & 6FJ, Sam grabs one of the cans of gas, pours some along the cars, and then sticks a rag into the spout lights it and puts it inside the door of the beehive. When Sam first lights the rag, the flames immediately move up the rag to the spout. As he lifts the can to the deck, we can see the fire is now *only* at the tip of the rag, and continues there as he pushes it inside the beehive, and then as it explodes, we see the fire again go up the rag to the spout (then boom).
Continuity mistake: At the end, Lester lasso's the landing gear of the plane, and holds on till he smacks into the statues in front of the casino. While the plane is flying off, we see Lester hanging by his right ankle and his left leg is forward (in front of him) bent only slightly at the knee. A few shots later, when we look up from the ground, his left leg is bent at 90 degrees and is now completely behind his body instead of in front of it.