Arrow (2012)

The Magician - S3-E4

Revealing mistake: When Oliver meets Thea at the Grind and Jot Cafe (Which looks unsurprisingly like CC Jitters) you can see the cups on the table are from CC Jitters. (00:20:50)

Honor Thy Father - S1-E2

John Diggle: The knife.
Oliver Queen: Right. The knife. I got lucky.
John Diggle: That was a kitchen knife. It wasn't even weighted properly and yet you threw it with accuracy across a ten foot room.
Oliver Queen: Exactly. I got lucky.

Guilty - S3-E6

Trivia: Oliver sticking an arrow in a boxing glove to knock out Ted without harming him is a nod to the comics, where a boxing glove arrow was quite common in his arsenal of trick arrows. (00:26:20)

Friso94

Elseworlds, Part 2 - S7-E9

Question: Why is Nora Fries in Arkham Asylum?

Rob245