Continuity mistake: When Annette is talking to Will in the kitchen about him having to be one hell of a guy for Vince, there is a paper circle on the floor under the kitchen's centre table. When Jack enters the room, the paper has vanished and also a large glass bowl has appeared on the tabletop. (00:21:25)
Continuity mistake: When Grace and Karen are sitting around Sal at the dinner table, Grace pours out a glass of champagne for him. In the first shot the glass is 3/4 full, but in the next shot it's only about 1/4 full. (00:31:30)
Revealing mistake: In the scene when Will brings out the turkey, Karen clearly says "my God, this scene is so long!" Apparently Megan Mullally said it on every take due to the length of the scene and the amount of times they had to reshoot it.
