Continuity mistake: When Mac's on the windshield and the car starts to dodge cars, one shot from inside the car shows the alien has disappeared.
Continuity mistake: During the dance at McDonalds tables and chairs suddenly disappear from the place and are replaced by dancers.
Continuity mistake: When Eric is about to wake up from his coma his jacket swaps from very open to slightly open between shots.
Continuity mistake: When Eric wakes up and follows the remote controlled car his hair is messy but in a close-up it's perfectly brushed.
Continuity mistake: Out in the desert, just before MAC points out the sign, everybody sees horses. In a wide shot both the horses and sign aren't there.
Continuity mistake: When the kids dance in the parking lot, they swap positions 180ยบ just as the family car arrives.
Continuity mistake: When Mac is dancing on the counter, disguised as a bear, he is twice as tall as he is for the rest of the film.
Continuity mistake: Mac jumps into the water feet first to save Eric, but when the angle cuts he is diving head first.
Continuity mistake: Before the wheelchair wipes out, while Eric is zooming down the hill, his hair is alternately still or moving wildly depending on the shot.
Continuity mistake: After the vacuum cleaner scene, Mac is drinking from a Coke can held by Eric. The can changes positions between shots.
Continuity mistake: The cops chase Mac down a hill and then follow Eric and Mac through a private garden. Cut to a close-up of the cops and they're back on the hill.
Continuity mistake: After the McDonald's scene, the cops chase Mac and are about to be run over by a white car. A frame later the car has turned to blue colour.
Continuity mistake: In McDonald's, when Mac is about to grab the cup, in the close-ups his eyes are white, big like a ping pong ball, and occupy the whole cut-out space in the disguise. In the wide angles, the eyes are smaller and big bags underneath show.
Continuity mistake: When Eric gets out of the water, his hairstyle swaps from parted to sideways.
Continuity mistake: When the family arrives at their new home, a mover employee is walking forward holding a blanket. When the angle changes he keeps walking but empty handed, blanket now on the floor, 5 meters ahead.
Continuity mistake: In the van, when Mac is watching the road, Eric disappears from the seat.
Continuity mistake: After the wheelchair scene, while the cops attend the family, a group of kids pass by the house. When the angle changes they've moved several meters back and pass by again.
Continuity mistake: In McDonald's, Mac is opposite to the counter and makes some flips and turns in the air, yet when the people stare at him they're pointing at the counter.
Continuity mistake: When the African-American girl in the red dress dances in McDonald's, her right sleeve swaps form up to down between shots.
Continuity mistake: During the traffic jam, while Eric and family are in the van, Eric's Coke is at chest level, but a frame later it's next to his mouth.