It is mentioned that Skeeter lives in Room 109, but above the door, the number is 111.
The door to Skeeter's hotel room changes from opening to the right on the inside shots,
then to the left on the outside shots.
When at the beach after Skeeter is hit by Jill, Jill's hat ends up on Skeeter's head perfectly fitted to the back of his head, even though Jill was on top of Skeeter.
When Skeeter's riding the motorcycle to save the school, the gears shift even though he doesn't throttle down or engage the clutch.
In the scene where Skeeter first spends the night with the kids, Jill and the kids are making signs. On the sign that Bobbi is working on first the C is not colored in. A little while later the C is almost completely finished; a few seconds later the C is just started, and a few seconds later it is just a little bit less colored in than just a second before.
When Sandler stops his truck under the "Gumball rainstorm" from the wrecked semi he gets out in this rainstorm and is never seen being hit by a gumball at all; even though he is entirely in the "storm." It is only when he opens up the umbrella that he begins to get hit where he technically should have been being hit the whole time.
In the story "medieval times", Sir Fix-a-Lot is said to jump into a moat of crocodiles which are actually alligators.
When Kendall passes out after losing the presentation Boogie starts licking his face and you can see something applied to Kendal's face that Boogie would like to lick.
Skeeter sets one story in ancient Greece but visualizes a Roman-style stadium and Emperor.
At Skeeter's place, he tells the kids it's time for bed. The girl responds that it's only 5:30 and they haven't eaten dinner yet; but the window blinds are open and it is pitch dark outside. That indicates it is much later then 5:30.
Near the beginning of the movie when Skeeter goes to his sister's house for her daughter Bobbi's birthday, Skeeter mistakes Patrick to be Bobbi, presumably due to the "boyish" sounding name. However when Wendy's best friend Jill shows up and is talking to Skeeter outside of the house, the present she has with her is wrapped in very "boyish" wrapping paper with basketballs and footballs all over it.