The Flash (2014)

Going Rogue - S1-E4

Continuity mistake: When Captain Cold shots Joe with the ice gun, he hits Flash instead, in the left side of his abs, but in the next shot the ice switches sides.

ozwal13

The Race of His Life - S2-E23

Harrison Wells: You know what? In battle, choose your weapon wisely. Some people choose a gun. I choose a Philips head screwdriver.
Cisco: Oh, oh. I'm sorry. You're so particular.
Harrison Wells: Ramone, could you just please? Have you ever worked with a tool before?
Cisco: I'm working with one now.

Attack on Gorilla City - S3-E13

Trivia: Before Barry and the others travel to gorilla city, Julian says something about Bludhaven. This is the city of Dick Grayson, aka Nightwing, former partner of Batman as the first Robin.

oswal13

King Shark vs. Gorilla Grodd - S5-E15

Question: Since David Hayter voiced King Shark, why not have him portray him in his human form of Shay Lamden?