You, Me and Dupree - Glass to Bottle
In the scene where Carl gets home late from work and misses the dinner Molly and Dupree prepared for him, Carl grabs a bottle of liquor and pours himself a glass. Carl walks away from the bottle holding the glass and they begin to argue. If you watch Carl's hands as they argue it changes from holding the glass to the bottle several times. I noticed it right away; if this wasn't on purpose someone definitely missed this in editing!