Dinner Party - S1-E3
Audio problem: When Barb mentions to the Campbell's about tiny servants, her mouth does not match with what she's saying.
Report Card - S1-E4
Continuity mistake: When Nora is pouring the cereal into her bowl, her spoon disappears, reappears, and then disappears again when Hank walks in.
Revealing mistake: When Phoebe freezes the secretary, you can see that she is frozen before Phoebe's "freeze breath" gets to her.
Plot hole: It turns out that the Venus Fly Trap ate Dr. Collosso, but this doesn't make sense for a few reasons. 1. There's no way that it could've opened the kennel without completely destroying the door. 2. The shot was off it for only 3 seconds, it couldn't have eaten him in that amount of time.
Revealing mistake: When the Venus Fly Trap is shrinking back to normal, the wires holding it up can be seen.
This Looks Like a Job For... - S1-E8
Continuity mistake: When Avery wins the cup-stacking contest, a cup is knocked over on Barb's pile. Two shots later, it is standing upright.
This Looks Like a Job For... - S1-E8
Continuity mistake: When Max and Phoebe are in the kitchen for the first time, at one point Phoebe's hair is resting on her right shoulder, but in the next shot her hair is behind her back.
Continuity mistake: After Max's flashback, Nora's pencil changes position on her notepad.
Continuity mistake: When Max pours his breakfast smoothie in the garbage, you can see what is written on the chalkboard. In the next shot something else is written on it.
Deliberate mistake: When the chickens are first shown, one of them is upside down.
Plot hole: The book that hit Phoebe 2 in the head actually hit her on the shoulder, not the head. She should not have turned dumb.
Nothing to Lose Sleepover - S1-E16
Continuity mistake: When Max and Dr. Colosso jump onto Phoebe's sleeping bag there are 2 pillows, a light blue pillow, and a dark blue pillow. When Max lands on the sleeping bag the dark blue pillow disappears.
Thunder Van - S2-E1
Revealing mistake: When Max has the Thunder Van manual, Phoebe uses her telekinesis to get it back. The wires attached to the book are in the shot.
Thunder Van - S2-E1
Continuity mistake: In order to escape the van, the kids use their powers to burn a hole in the bottom of the van. The hole is different from when they make it to when they escape.
Thunder Van - S2-E1
Other mistake: The Thunder Van is claimed to be soundproof, but when Hank finished pranking the kids, Phoebe could be heard talking to Barb from inside it.
Continuity mistake: When you see Barb back from CostClub she has at least 7 boxes. When she is seen again she has 3.
Continuity mistake: Rusty throws his rattle on the ground, and when Nora and Billy push the strollers to the balloons, it is still there. But after this, it disappears for the rest of the episode.
Revealing mistake: When Max pushes the stroller into his house, look into the stroller and you can see a baby doll, not a real baby.
Continuity mistake: When Phoebe makes the backpack slide it turns around 180° between shots.
Continuity mistake: After the courier trips and falls the backpack moves closer to him between shots.