When in The Drunken Clam, Peter knocks his beer on the floor and you hear the sounds of the glass smashing. But when the shot zooms out, you can see the glass intact on the floor.
When Stewie is in court because apparently Michael Jackson had touched him, Stewie is obviously sitting down in the first scene but when Stewie is shown again, he is clearly standing up, with no movement visible.
In the first scene when the family is watching TV, Chris's hat is yellow on both the top and side. When at all other times his hat is black on the side and yellow on top
Stewie reminisces back to when he testified against Michael Jackson. In the scene, Michael Jackson and his defense attorney are sitting next to the jury. In criminal court, the Prosecution sits next to the jury, not the Defense.