Audio problem: In the last fight scene in the movie the children's mother slams the female Russian spy with a half-empty (she shakes it first) plastic bottle of bleach. When she finally hits the "spy" the sound effect played is the exact same sound effect that they used when Jackie Chan was slamming the male Russian spy with cast iron skillets.
Continuity mistake: When Larry comes into the house, Bob's girlfriend sees him and runs back behind the wall, but moments later you see her run through the front door and go upstairs.