Revealing mistake: When Nick is in the cereals and sees the green-screened spoon coming at him, it moves in slo-mo and frame by frame, but his dad behind moves at normal speed.
Audio problem: During the bee scene, Ron tells Amy "It's all your stupid fault", but from a side angle he's not mouthing the lines.
Continuity mistake: When the kids exit the waste bag, from the wide angle it swaps from black to light grey. Also, the fence disappears.
Continuity mistake: After Nick falls on the pollen, there's a shot of his mom calling him. Right after, the amount of pollen on him is completely different.
Revealing mistake: When the green-screened bee passes by Ron and Russ they stare at it, but when it flies away they keep looking at the same spot as before.
Continuity mistake: When the kids are about to climb the grass, Wayne lets Quark out and the door closes twice: In the close-up and afterwards in the wide angle.
Continuity mistake: Pair of blue jeans disappear from Wayne's shoulder after he turns the faucet off.
Continuity mistake: Nick falls on the pollen on the left side of the flower. When the angle changes he's right on the middle of it.
Continuity mistake: The position of the trash bag left by Wayne differs between shots.
Continuity mistake: When Wayne is destroying the machine, the kids' position differs between the front and back angles.
Continuity mistake: When Wayne tries to shrink the apple, the way he holds the remote control differs between the close-ups and wide angles.
Continuity mistake: When the movie starts and the dog has left the letters, watch the bottles of paint in front of him: They appear closer together in the opposite angle.
Continuity mistake: From Nick's POV, he enters his father's lab and opens the door wide, yet from the opposite angle it is slightly open.
Continuity mistake: When the movie starts, and the dog brings the letters, their position on the table changes between shots.
Visible crew/equipment: When the neighbours visit the Szalinskis to get their baseball and Nick opens the door, you can see the reflection of the cameras and lights in the glass.
Continuity mistake: After the apple explodes, the amount of fruit on Wayne's forehead increases when he sits on the couch and Quark licks him.
Revealing mistake: When the (green-screened) bee arrives at the flower, the yellow pollen turns dark pink due to the blue/gree screens used.
Continuity mistake: When Mr. Thompson is shrunk and waves at his family, he is sitting between two bolts. When the angles changes, from a back view, he is sitting right in front of one.
Chosen answer: Russ says he learned it in French class because giving mouth to mouth resuscitation looks similar to French kissing.
Phaneron