Revealing mistake: The sequence at the start showing a "normal" day shows a coffee shop with the Flash supposedly running out with two coffee cups.When we see his day now without super speed, the shot of the coffee shop is just a continuation of the previous one, with the same guy walking through the door. In fact if you go back and look closely at the first shot, you can just see the edge of Barry, hidden behind another customer.
The Flash (2014)
1 mistake in Back to Normal
Starring: Danielle Panabaker, Tom Cavanagh, Candice Patton, Grant Gustin, Rick Cosnett
Tricksters - S1-E17
James Jesse: You know, when I was free and at my height, a day without casualties was like... Well, like the Cubs winning the pennant. It just never happened.
Crisis on Earth-X, Part 3 - S4-E8
Trivia: Supergirl says to her doppelganger "General, can you step outside." That line was said by Superman in Superman II.
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?