Revealing mistake: Rob and Laura are both freaking out and panicking in their bedroom when all of a sudden Jerry shows up outside their closed window. Yet Jerry puts his arms in their room, showing it's not an actual window.
Continuity mistake: Rob, Laura, Buddy and Blacky are in Robs basement, there is no wine bar, or giant boulder, and the steps that come down from upstairs lead straight up to nowhere. Because there's a window to the left beside the steps, rather than how it was when they were buying the house where you could see into the house. And there's a giant gap under the wall behind the pool table. There's also a random door that leads somewhere also behind the pool table. (00:24:47)
The Sick Boy and the Sitter - S1-E1
Continuity mistake: In the opening scene when Laura answers the phone her hand is on the wall. The shot changes, her hand is now on her shirt.
Fifty-Two, Forty-Five or Work - S5-E13
Continuity mistake: Rob tells Sally, Buddy and Mel "It was rough... Out of work, new house, no furniture, a baby on the way, 1 single dime in the bank!" In several other episodes Rob said they either already had a kid, or they were on their way to the hospital in the cab, on their way to the hospital in the back of a laundry truck, or were already at the hospital. They already had furniture in the other episodes when they brought Richie home from the hospital.
Visible crew/equipment: While Rob is sick in bed he's just about to grab the phone near the end of this episode you can see a big shadow of a giant camera in between the back of the TV set and a stage light behind the camera. (00:21:22)
The Sick Boy and the Sitter - S1-E1
Continuity mistake: Richie's room is completely different from this episode compared to the later episode "The Man from My Uncle."
My Husband is the Best One - S3-E14
Continuity mistake: In a different episode the Alan Brady show writers were on a different floor than Alan Brady and Mel Cooley. Yet in this episode they're on the same floor because we can hear Alan yelling at Mell while Rob is in the writers room where Sally and Buddy, currently furious reading the magazine article. (00:14:37)
Deliberate mistake: Rob is about to leave his room, and he opens the bedroom door to the noise of a loud music box that was originally being made by Laura's music box that holds jewellery in it.
Audio problem: When Rob is yelling at the officer about the dining room set and saying "I want my dining room table and chairs!" you can hear a random bell tinkling away behind the camera. (00:17:50)
Continuity mistake: The number of glass "pea pod" shaped sphere balls change through out the series. In "Don't Trip Over That Mountain" there were only 3 spheres. In several episodes there were 4 spheres and in others there were 5 of them.
The Great Petrie Fortune - S5-E6
Plot hole: If Rob was just 12 or 13 when he last saw his grandfather (that's what they said in this episode, also he never called his grandfather ever from what it looks like) then his grandfather wouldn't know that he has been working on a TV program. (He started working on the Alan Brady show when he was 20, not before).
Suggested correction: First of all, it is Rob's great-uncle, not his grandfather. And what makes you think he wouldn't know? Off the top of my head, I can think of a dozen ways he could have known. He was watching the show and saw Rob's name in the credits. His brother called him to brag about his grandson. He read a magazine article about television comedy writers. Etc. Etc.
The Man from My Uncle - S5-E27
Factual error: The Government Agent says "we want to use your house for base operation for looking at the house across the street. Rob says "Jerry helper!" yet Jerry lives on the same side of the street (closest to the den, across from Rob's bedroom). Someone has their houses mixed up.
Buddy Sorrell, Man and Boy - S5-E22
Other mistake: Rob got a new watch for his birthday a few seasons back. Yet he's still wearing his old watch. And also his watch time says it's 3:00. Rob and Sally would still be at work if it was actually 3:00.
The Great Petrie Fortune - S5-E6
Factual error: Rob tells this lady that the guy that passed away was his great-uncle and that the last time he saw him was when Rob was 12 years old... This is the same Grandpa that was also seen in the episode "What's in a Middle Name" (in this episode in season 5 Richie would be 10 or 11. But the other episode he was supposedly 8).
Suggested correction: You seem to be confused about Hezekiah's relationship to Rob. He is Rob's great-uncle which means he's the brother of Rob's grandfather, the character from "What's in a Middle Name?" (And by the way, the scene in that episode took place before Richie was even born. The fact that they were arguing over his name should have been a clue).
Character mistake: Rob is reading the news or his lines and instead of saying "the stay awake record of 100 hours" he says "stay away record of 100 hours."
Suggested correction: Of course he does. He is punch drunk from the lack of sleep. That's the point.
On hour 24 Rob couldn't even say the rhyme at all, he also sounded slightly drunk, also his lower eye lids got dark. I have been up for 48 hours before and my eye lids never turned that color also I didn't act slightly drunk like that either. So it's not actually true to life here.
1) You can't assume your personal experiences is typical of everyone's. 2) I doubt your experience was very funny. In a comedy, stupidity overrides "true to life."
More like dumbness overrides "true to life." I'm pretty sure that falling down the stairs is funny to some people (which is what I did).
Other mistake: Buzzy said that Rob made a song making fun of Sergeant Foley. However, Rob's Sergeant was Lebost.
Dear Mrs. Petrie, Your Husband is in Jail - S3-E28
Character mistake: Rob is telling Laura why he's in jail. He says "Monica Doorwell! She must be Millie and Jerry's babysitter." The babysitter's last name is "Darwell". (00:02:00 - 00:04:00)
The Lady and the Tiger and the Lawyer - S3-E16
Continuity mistake: Donna goes back to the den to get her coat to show Arthur. Laura yells at Rob in the kitchen "Rob! Did you lock her in the Bathroom!?" It's a den in most of the episodes... Turns out in this episode it turns into a bathroom with carpet on the floor. (Supposedly when Laura is yelling at Rob in the kitchen).
Factual error: While Rob is roaming the house with a gun in his hand he chops the metal tube that the wood burning stove in the living-room is connected to. However since in real life the metal tube would be thick and insulated the tube he dented with his hand at that speed wouldn't have been damaged at all. Also, it could have broken his hand or at least sprained his hand where he wouldn't be able to use it or feel like using it.
What's in a Middle Name? - S2-E7
Other mistake: The desk that was Rob's Grandpa's in this episode was not the same exact desk that Rob inherits in "The Great Petrie Fortune" after his Grandpa passed away. (00:17:40)