When Tyreese and Allen are fighting by the pits, Tyreese throws Allen down on the ground and grabs him by the throat. The top half of Allen's body, including his head, is still on the ground, near the edge of the pit. In the next shot, the entire top half of Allen's body is suspended over the pit.
When the Governor is fighting off the walkers that Andrea forced on him after she has left the stairwell, you can briefly see her still peering out at him from behind the door even though she is actually on the other side of the building making her way out.
When Andrea is attacked by a walker up against a tree you can see another tree next to her easily move as if made of styrofoam.
Although it appears to be cool or cold outside (due to everyone wearing jackets and warm layers), when the Governor is chasing Andrea across the field in his truck, when it cuts to the cab view the temperature on the rear view mirror clearly reads 91 degrees.