Continuity mistake: When Malcolm is being the safety eagle at the childrens school convention, as he flails around on fire, he knocks the large space heater over. In subsequent shots it is suddenly standing upright again. (00:03:20)
Continuity mistake: When Leah Fuller is showing Big Momma the children, they go into Andrew's room, and he jumps off of his bed, flat onto the floor. Notice his toys all over the floor and desk. When he gets back up they are all positioned differently. (00:18:10)
