Continuity mistake: Episode 66-5 "Hassle In The Castle/Remy Rides Again": In the final scene, notice the house across the street furthest to the left; first time it is shown there is a large window with light coming through. The last time we see the same shot, however, it is a totally different house.
Continuity mistake: Episode 4-6 "The Jimmy Timmy Power Hour": In the scene where Timmy and Cindy are in the Candy Bar their milkshake has two straws for the first two shots. But in the next shot there's only one straw which is on Timmy's side, it then moves to Cindy's side. Then when Carl, Sheen, and Libby run in both straws appear again. When they all run out there's only one straw and on Timmy's side.
Continuity mistake: 5-59 Just Desserts. When Crocker jumps out of the open window in the classroom, notice on the exterior of the school all the windows are closed.
Continuity mistake: In the Fairly Oddparents episode "Power Pals", when one of the Power Pals chucks a crystal into a drain to create "The Table of Frienditude", the crystal bounces under a table and into a drain directly under said table. However, when the shot pans out, the drain is beside the table, not under it.
Continuity mistake: In Mother Nature, when Timmy goes to apologize to his Mom, the two makeup guys dissapear after his mom notices him.
Continuity mistake: In "Oh brother!" after Timmy gets beat up by Francis, he is in his room with a lot of injuries, yet when he wishes for a new brother and his mom calls him for something, the injuries are gone.
Continuity mistake: In the episode Miss Dimmesdale, in the scene where Vicky has Timmy pinned to a board in the garage. The next scene shows Adam West pulling Timmy in with a claw, notice that there is nothing in the garage but in the next shot a bunch of tools appear.
Continuity mistake: In the season 3 special "Fairy Idol", Norm looks at various newspaper clipping about how bad Bucky McBadBat is. One of them says "Worse Baseball Player Ever" when it should really be "Worst", and when Norm hands the paper to Chester later, it suddenly does say "Worst".
Continuity mistake: In "For Emergencies Only" were Timmy is in Mr. Crocker's classroom, the board says, 'Pop Quiz Today'. 'Today' is underlined. In the next shot, nothing is underlined. After those two shots, it is all underlined.