Continuity mistake: When Mike walks into the kitchen asking Alice if he can give her a hand, Alice removes two pots from the stovetop leaving the left side clear, but in the shots from the dining room when Alice trips, there are two large pots on the left side of the stovetop, near the edge of the counter. (00:01:20)
The Grass is Always Greener - S1-E24
Visible crew/equipment: When Mike returns home with the grocery bags, as he sets them on the table Alice walks over, and the shadow of the moving boom mic is visible on the swing door behind Mike, at the top left side of the screen. (00:11:05)
Visible crew/equipment: While Mike is fiddling with his golf bag the morning after Tiger disappeared, just as Mike tells Bobby there's nothing to worry about because his siblings are checking the neighborhood, the moving shadow of the boom mic is visible in the top right corner of the screen. (00:02:45)
Continuity mistake: When Bobby attempts to climb the treehouse for the second time, he climbs to the very top and looks up in fright. From his POV we see he has two more wooden bars to climb, despite being at the top a split second ago.
You Can't Win 'Em All - S4-E22
Revealing mistake: When Cindy and her parents get home after the television show, just as Carol and Mike walk down the steps the set's unfinished wood can be seen at the edge of the steps, at the bottom right corner of the screen. (00:22:40)
Continuity mistake: During the goat in the master bedroom scene, the flowers on Carol's side of the bed change during the scene. At first there is a pink flower to the right of a white flower, and then it changes to white flower on right of the pink one. In addition, the whole bouquet looks slightly different in different shots.
My Sister, Benedict Arnold - S3-E5
Continuity mistake: When Kathy Lawrence enters the Brady home, as she walks through the kitchen, her top button is unbuttoned. When she is in the living room cheering, it is buttoned.
Today, I Am a Freshman - S4-E4
Other mistake: In one of the final scenes, Peter ignites his volcano on the patio in front of Marcia and the members of the Boosters Club. As the volcano goes haywire, Marcia and the Boosters are shrieking as the lava/mud covers them head to toe. Somehow Peter, who is much closer to the volcano, is unscathed by the eruption and remains free of any dirt.
The Not-So-Rose-Colored Glasses - S3-E13
Continuity mistake: In the middle of the episode, a boxy gold station wagon is pulling into the Brady driveway, which immediately cuts to a shot of a rounder body style, gold station wagon pulling up to the carport.
Continuity mistake: In a first-season episode, Carol is asked by one of her daughters, "How come you never play golf anymore?" indicating she used to play golf. In the later seasons, an episode came out where Carol was first learning to play golf (appearing as if she's never played before).
Dough Re Mi - S3-E16
Plot hole: Greg bought a time spot in the music studio to record a song. He writes a sudden new song for the studio at the last minute and then, next scene, the kids are singing the song in the studio along with background music playing. Where did all the instruments come from and who was playing them? Even if pre-recorded, Greg and the other kids would have just shown up at the studio at their time, and no way they would have been able to get the tracks down in advance to an unknown song like that.
Fright Night - S4-E6
Plot hole: After the girls get their revenge on the boys in the attic, they explain the mysterious "I must have air" voice from the trunk as it's revealed to be from a tape recorder. Marcia mentions a set up the girls had where they played the tape recording (from their bedroom) when they were ready. This is impossible as the recorder was in the attic trunk and the play button would have had to be manually pushed down by an actual person to activate.
Character mistake: At the end of the episode when all the kids line up to head upstairs, Mike gives instructions to line up according to their size (big to small). If you notice carefully when the kids all line up, Peter stands behind Marcia, yet he is slightly taller than her.
Continuity mistake: At home, before leaving for the Grand Canyon, the trailer was much taller than the car, and looked more like a motor home. After that, it becomes a different vehicle more like a trailer, about the same height as the car. When the prosecutor steals the car, it's the tall version, and when they arrive at the Grand Canyon to look at the view, there's nothing attached to the car bumper. When they leave the Grand Canyon it's the shorter version, back to being a trailer.
The Dropout - S2-E1
Other mistake: When Greg is in the kitchen getting ready to leave for the baseball game, there is a number 53 on the back of his jersey. In the following scene at the baseball park, there is another man with his back turned throwing practice balls, who also has the number 53 on the back of his jersey. It is clear that it is not the same person.
Lost Locket, Found Locket - S1-E25
Continuity mistake: When they are getting ready for the reenactment of the night when Jan lost her locket, Greg is about to eat an apple when the boys walk into their room. When Greg sits down, his apple is mostly finished.
The Power of the Press - S3-E19
Continuity mistake: The book in Jan's arms keeps moving; first the front is facing outward, then the back, then the front again. (00:13:40)
The Dropout - S2-E1
Character mistake: When Greg was in his room talking to his parents, he said that Joe DiMaggio, Mickey Mantle and Yogi Berra never went to college. Joe DiMaggio attended Yale University, Mickey Mantle attended the University of Oklahoma and Yogi Berra attended Montclair State University.
Suggested correction: DiMaggio dropped out of high school and worked odd jobs before playing semi-pro ball. His son, Joe DiMaggio Jr attended Yale for one year. Mantle was offered a scholarship to Oklahoma to play football, but he never went. He started playing semi-pro ball at the age of 17. Berra dropped out of school after the 8th grade and then signed with the Yankees when he was 18 (but served in the military before playing). Montclair State University gave Berra an honorary degree in 1996.
The Voice of Christmas - S1-E12
Revealing mistake: Carol's hair is quite noticeably shorter in an almost 'Twiggy' bob. When in the prior episode 'Vote for Brady' it was past her shoulders, curled into a very fashionable bubble flip. Not that she wouldn't have visited the stylist after the campaign. Just a very noticeable difference.
Suggested correction: The episodes were aired out of order, so this episode did not immediately follow the previous episode in production. Plus, this was a Christmas episode and Carol was preparing to sing in the holiday service, which is just one possible reason why she'd change her hairstyle.
Factual error: About 1/3 through the show, Greg has to talk to Marcia and asks Peter to leave. On the way out Peter stops to start recording on the tape recorder. He only pushes the play button. He would have had to push the red record and play button to record their conversation.
