Although the flowers, to be used as a center piece, were brought down from Mary Ellen's room, they weren't on the table in the final dinner scenes.
While John and Jason are playing checkers (45.03), it is Jasons go. The camera pans right to granddad. In the very next scene, John and Jason and the game. John repeats his previous line, "Jason, it's your move", but now the pieces on the board are not in the same as in the previous scene.
The flowers in the vase are placed around a pumpkin that Jenny places as the centerpiece for the Thanksgiving meal.
There's a grammatically incorrect sign in the exam room that reads "No talking. Keep your eyes on you own paper."
In the opening scene, as Erin, Elizabeth and Jim-Bob are carrying in the pumpkins, Kami Cotler looks directly at the camera for a few seconds.
At 1:06:20, as John is sitting in the mill, the shadow of Michael Learned (she was waiting for her cue to enter the scene) can be seen cast in the lower left of the picture.
When John-Boy is in the truck, talking to his father, who he found walking down the road, a fly is seen crawling around John-Boy's ear but he just ignores it and continues with the scene.
When John-Boy drops his plate in the stairwell, the sound effect is heard twice, once while he's still holding the plate and once when he drops it.
Right before John Boy is hit by the belt he turns around and grabs a board. On the right side you can see a crewman walking.
Elizabeth asks Jenny if John Boy has kissed her yet and Jenny says no. Jenny and John Boy were shown kissing a few times in the previous episode she was in.
A seasoned hunter like Grandpa would not allow his own grandson to handle a shotgun as dangerously as Ben is in the turkey hunting scene. Instead of bracing the butt of the weapon against his shoulder, Ben has it wedged into his armpit, insuring that he'll likely lose control of the gun when it recoils. Also, because of the way Ben is holding the gun, he's forced to crane his neck into an awkward position in order to take aim, causing his stance to become quite unstable.