A Dark Knight: One Bad Day - S4-E21
Continuity mistake: After Selina and Bruce kiss, she takes her hand off the back of his neck and lowers it. In the next shot, her hand is back on his neck and she lowers it again, and then it's on his shoulder.
Gotham (2014)
1 continuity mistake in A Dark Knight: One Bad Day
Starring: Sean Pertwee, Ben McKenzie, Donal Logue, David Mazouz, Camren Bicondova, Dean Morris, Jon Beavers
The Fearsome Dr. Crane - S1-E14
Continuity mistake: When Nygma examines the corpse, he pushes his right hand deep into the body. When he is caught, he holds both hands up in the air. The glove on his right hand is completely clean, when it should be covered in blood and gore.
Legend of the Dark Knight: 13 Stitches - S5-E6
Edward Nygma: [while Lucius Fox is removing the chip from his brain] Ow! Will you be careful?
Lucius Fox: If you'll stop moving, this will go a lot faster.
Edward Nygma: Well, if you would be more careful, I wouldn't potato all the long legs from the hidden spoon.
Barbara Kean: What just happened?
Lucius Fox: I believe the chip is installed against his speech center.
Barbara Kean: Huh. Do it again.
Lucius Fox: The human brain is not a play thing, Ms. Kean.
Edward Nygma: Please don't habituate the curtain rod.
More trivia for Gotham
Question: How is it that Butch doesn't get his hand back but Galavan's sister has full control over hers even though it was sliced off?
Answer: Tabitha got her hand sewn back on, Butch didn't.