Revealing mistake: When Gordon falls with the broken drain pipe his yellow boxers are ripped off, but when he lands on the grass, even though we know he's supposed to be naked, we can see he's wearing white briefs in the side shot.
Visible crew/equipment: When Gordon's locked out of his building he climbs up the drain pipe, and while the pipe sways back and forth we can see the safety cable attached to Gordon.
Continuity mistake: When Spot witnesses the purse snatching he's suddenly wearing a collar, which promptly vanishes again.
Continuity mistake: When Agent Sharp switches the ID tags on the animal crates, the ID tag on Agent 11's bars changes position between shots.
Continuity mistake: When Gordon tastes the bran cereal with soy milk and prunes, the cereal box is on the table beside the soy and regular milk containers, but when he's gagging by the sink the cereal box has vanished in the shot facing James, and then it reappears. Things on the table change position as well.
Continuity mistake: When Gordon fixes himself the bowl of bran cereal with soy milk and prunes, he places the orange cap back on the soy milk, but when he tries to eat the cereal and spits it out, the soy milk cap is gone (the gallon of regular milk has a pink cap behind the capless soy milk). Then it's back on the bottle, before it's off and back on again.
Visible crew/equipment: When Stephanie gets into the van that's headed to the airport, the reflection of the cameraman and camera can be seen on the window when Stephanie shuts the door. (00:18:10)
Continuity mistake: Tyson, the dog on the chain, escapes and snaps the chain right in the center. When he reaches the tree, the remains of the chain are gone.