The Good, The Bad, And The Wealthy - S2-E4
Other mistake: When Rembrandt is playing poker for the first time, the guy across from him says he'll call (and then he raises). So Rembrandt folds (even though he had a full house) because that's what Priscilla told him to do. But Rembrandt was supposed to just ante and fold until Cliff got there. But because the guy called, that means Rembrandt made the first bet. He shouldn't have bet at all though.
Continuity mistake: When the car pulls into the computer store, there is only one occupant. However, Rembrandt, Quinn and Wade are all inside. (Incidentally, the reason this mistake occurred is that the shot of the car pulling into the parking spot was recycled from the Pilot episode).
Post Traumatic Slide Syndrome - S2-E8
Plot hole: Since Quinn's double built a sliding system in his basement, our sliders could have used it to reset the timer and go home, just like they intended to do in the episode "Eggheads."
Post Traumatic Slide Syndrome - S2-E8
Continuity mistake: When Wade enters the recording studio to see Rembrandt, we can see him reflected in the window removing his headphones and handing them to an assistant. The camera angle changes and he removes the headphones (again) & puts them down on a stool.
Greatfellas - S2-E10
Deliberate mistake: When Quinn comes back to the hotel room with a large stack of money he'd won at the casino, he waves it, and you can see a 1-dollar bill in the middle. He was supposed to have over $100,000, but since the crew couldn't get that much money for a brief scene, they used a stack of dollar bills. (00:35:40)
The Young And The Relentless - S2-E11
Visible crew/equipment: When Q notices a body face down in the pool, the camera points to pool and pans right. You can see a female crew member at a table with papers in the reflection of the glass door/window. (00:00:50)
Revealing mistake: The dialogue says they are in San Francisco while they wait for someone to pick them up for day laboring. A few moments later, we see on the top of the building "Vancouver Ice and Cold Storage". They're clearly filming in Vancouver, not in San Francisco. (00:01:25)
Other mistake: According to reverse-time issue: In court, when Quinn looks at the clock on the wall, you can see that the clock still goes forward, despite of the anticlockwise indicators since the digits are inverted. (00:31:25)
Suggested correction: You just explained the plot that Max explained to the group. Time is moving forward to the people of that world but moving backwards for them. So the anti-clockwise movement of the hands show time moving backwards while the reverse order of the numbers shows time moving forward.
Other mistake: The Sliders discover the reverse-time issue when they notice that the clock on the wall is backward. However, in other shots, clocks look normal. Look carefully at the clocks on the judge's desk as the camera pans by.
Double Cross - S3-E2
Visible crew/equipment: When the Professor returns from the vortex and punches the guard, in the guard's glasses is the reflection a crew man holding a boom in his hands. Look closely in the right lens. (00:39:05)
Continuity mistake: The clock on Danielle's hospital room wall reads 11:40 a.m. when she's brought in. Seconds later when the nurse leads Rembrandt to a bed because he thinks he's going to give blood the clock on that wall reads 2:30 p.m.
Continuity mistake: When Quinn has the real Duke's sword, he's pointing it towards the Duke. When the Duke tells his story, Quinn is dropping the sword down to his side. In the next shot it's back up pointing at the Duke.
Plot hole: If Quinn has the timer that could be used multiple times without trouble, why couldn't he take back Remmy and Wade then come back and save the world in peril?
Continuity mistake: In this episode the team is looking back into a slide that happened before Dr. Arturo passed away. Upon arrival on this version of earth they are showing them using a timer which they have obtained in the very episode (Exodus Part 2) Dr. Arturo gets shot and dies, and therefore couldn't have been used by them in this earlier slide.
The Other Slide Of Darkness - S3-E21
Continuity mistake: When Alt-Quinn tries to hand Quinn the sword, the strap from the handle in hanging down, in from of his hand. In the next shot, the handle is in the opposite direction and behind his hand.
The Other Slide Of Darkness - S3-E21
Plot hole: Quinn once again meets the alt-Quinn that he met in the pilot episode. Alt-Quinn tells our Quinn that he remembers solving the final part of the equation on his chalkboard. The problem is, there are many...possibly an infinite number of Quinn doubles in the multiverse. How could alt-Quinn have possibly known he was talking to our Quinn?
Continuity mistake: When the Kromagg leader goes to eat an eyeball, he stabs his fork into a green eye. In the next shot when he lifts it up, the eye is now blue.
Continuity mistake: When the Sliders see their first bunch of Welcomers get zapped, there is a short blonde woman in that group. We know later in the episode that these people are being burned to ashes; so she is now dead. In the final scene of the episode, that woman is in the audience.
Continuity mistake: When the Kromagg sub-commander captures Quinn in the kitchen area, Quinn is leaning back, away from the knife. The sub-commander is a good 8-12 inches shorter than Quinn. The camera angle changes, and now the sub-commander is about 6 inches taller than Quinn.
Character mistake: Maggie and Rembrandt go into Alt-Colin's room thinking it's their Colin. But then begin to question when he had time to buy a suitcase, get his stuff monogrammed, and where he would get the money for it. When they find Alt-Colin, he has expensive jewelry on and is acting weird, saying "homie" and hitting on Maggie. And yet they still act like this is their Colin and don't think about it being his double, despite the fact that they constantly talk about and met their doubles.