Arthur receives a "Civil War" videotape series in return for his Public Broadcasting Station (PBS) donation. He shows to Carrie and she places it on the kitchen counter. During their conversation about it, the camera switches focus and when it returns to the tape collection it is now a different series called "The Great War". Both the size and color of the boxes are different.
While Carrie and Doug are arguing in the kitchen, notice that she opens the lean cuisine box and the camera cuts away for about twenty seconds and then she opens the box again.