Visible crew/equipment: When Kel gets up to get more water you can see one of the cameras.
Doing Things The Hemingway - S1-E3
Continuity mistake: Kel is attempting a life goal and attempts to put 50 grapes in his mouth. When he spits them out there is about 10, nowhere near what Kel then claims is 33 grapes.
Doing Things The Hemingway - S1-E3
Revealing mistake: Kel takes the VCR player without unplugging it but Roger was watching a video seconds before.
Doing Things The Hemingway - S1-E3
Revealing mistake: The clouds are very obviously a set-drop when on the top of the CS tower.
Doing Things The Hemingway - S1-E3
Continuity mistake: When Kel jumps into the window cleaners' bench it's only a fraction down from the roof. no more than 6ft. Next shot with Kenan the bench is further down.
Continuity mistake: When Kenan and Kel are in Kenan's room there are 2 socks hanging out of the dresser the one on the left keeps changing positions.
Continuity mistake: Kel comes into Rigby's and sits on the counter and takes of one of his trainers, after he has been handing out fliers. He puts it on the counter so the sole of it faces the camera all the time, yet during shots it suddenly changes so that the top of the trainer faces the camera.
Audio problem: The sound of the aspirin hitting Chris is just a fraction before it hits him. (00:02:35)
Continuity mistake: Mo Sweater Blues: For the amount of water Kel splashes on Kenan the wet patch is way to big.
Diamonds Are For Roger - S1-E7
Audio problem: When Chris is hit by the old lady the sound is before the actions.
The Cold War - S1-E8
Continuity mistake: The clock in Rigby's is changing time throughout. (00:04:00)
The Cold War - S1-E8
Factual error: The pilot that jumped at the end isn't descending fast enough to be real.
The Cold War - S1-E8
Continuity mistake: Kel drinks a fair bit of Kenan's "medicine" but in the next shot the amount of "medicine" is greater than before.
The Cold War - S1-E8
Revealing mistake: Cold War: The drill hole Kenan makes at the start is larger than the drill bit.
Revealing mistake: The orange soda cans are supposed to be full but when they fall they are obviously empty.
Continuity mistake: Just before and when the president it in Rigby's The clock keeps changing time.
Answer: Kel.