Continuity mistake: When Pinkett and Murphy are at that restaurant/comedy club and the guy with the dreadlocks is making fun of everybody (this is the second time they go to this place) when the show him from the front his hair is sticking straight up but when its from the back it's down.
Continuity mistake: At the first family dinner scene, grandma starts coughing. The camera shows her from the front with a glass of water to drink. The camera then switches to the side and shows her with a glass of coke in front of her. Her daughter says "Momma drink some water" and suddenly it turns into a glass of water again.