- Anon: From Season 2 onwards, Chelsea and Tucker have a photobooth picture of them kissing hanging on her wall. After the timeskip, their daughter Candace has a very similar picture on her wall with her boyfriend Ryan.
- Much to his dismay, Koden's party from the first episode of DSBT InsaniT is references a few times.
- If the Emperor Had a Text-to-Speech Device:
- In Episode 4, the Emperor mentions that he's still disgusted with Dreadknight, which has appeared in episode one.
- Another episode one call-back happens in episode eighteen-and-a-half, when the Centurion returns to keep the Emperor calm.
- In the same episode, Kitten mockingly repeats Emperor's "Fourth-Degree Warp Fuckery" line from the previous Q&A, earning him a mind-fist to the face.
- GEOWeasel's Nar, in the fourth episode, performs a line from the "false start" pilot episode verbatim. Weas informs him that he's reading the wrong script, and he reads the correct line.
- The creators of The Most Popular Girls in School and Dr. Havoc's Diary take extra care to constantly remind the viewers of what has previously happened in the series.
- Practically every good joke in Red vs. Blue eventually gets a Call Back.
- The longest gap between joke and Call Back — which would probably be a Brick Joke if not for the Memetic Mutation of the quote — was Simmons' observation in the first episode that "Even if we pull out today, and they come and take our base, they would have two bases in the middle of a box canyon. Whoopdee-fucking-doo." In episode ninety-five, when the Blues take over the Red Base:Church: I guess we have... two bases in the middle of a box canyon now.
- Recently been surpassed by Sarge's epic Rousing Speech in "Revelations 18" starting with the first line in the series, "Do you ever wonder why we're here?"
- And now in "Revelations 20", "Can you settle a bet? Does that look like a big cat to you?
- One of the episodes in Season 10 gives us yet another one, as well as a bit of Self-Deprecation.Tucker: Whose turn is it this time?
Grif: It's Simmons' turn.
Simmons: [sigh] Fine. I would just like to know that I suck, and that I'm a girl...
Grif: [to Donut] You know, these were a lot funnier the first time we did them.
- Season 15, Episode 20 gives yet another one when Grif resolves a Spot the Imposter situation between Simmons and an Evil Doppelgänger by asking "Why are we here?" The imposter answers literally while Simmons answers correctly with the same answer Grif himself gave all the way back in the first episode.
- The longest gap between joke and Call Back — which would probably be a Brick Joke if not for the Memetic Mutation of the quote — was Simmons' observation in the first episode that "Even if we pull out today, and they come and take our base, they would have two bases in the middle of a box canyon. Whoopdee-fucking-doo." In episode ninety-five, when the Blues take over the Red Base:
- Team Service Announcement:
- In Subtlety, "Sneakman" by Hideki Naganuma plays when the BLU Spy is being sneaking up a Heavy. In Objectives, the same music plays when the Spy sneaks up to the Payload cart.
- The Soldier in Grenade Launcher says "I've got a good feeling about this!" in a bad situation just like he did in Unlockable Weapons.
- The BLU Scout in Scout Combat screams while running just as he did in Subtlety.
- Cooperative Engineering features a Sniper saying "It's like Christmas mornin'" twice just like he did in Class Balance.
- Ultra Fast Pony turns these into an off-screen subplot. In "Out with the Old Characters", Applebloom kidnaps Princess Luna to finance the Cutie Mark Crusaders' new treehouse. In "Rocks Clocks, and Two Stupid Ponies", Celestia shows up at the Running Of The Leaves because she's "pretending to care" about Luna's kidnapping. (This is accompanied by the subtitle "Epic continuity!") In "Ponynet Fight!" the day lasts for much longer than 24 hours, because Luna isn't there to raise the moon (and Celestia forgot). Finally, in "Gelatin Swingsets", Celestia pays the ransom, and the CMC build their treehouse.
- In Underpants, there are 2 in the Genocide ending to the fake Genocide ending. Both involving SANESSSS. They are both triggered when given the option to spare Sans:
- If "No" is selected, SANESSSS appears for brief seconds when Sans states that they'll have food, keep watching, laughing, and making more memes.
- If "Yes" is selected, after Sans wakes up for the third time, he sees SANESSSS next to him and gets his eye impaled by a bone shot by a gun, and then gets disintigrated by the Tom Blaster.
- Zero Punctuation: Yahtzee's review of the iPhone game Fruit Ninja, whose developers are based in the same city as he is, featured a call-back to his subtle recommendation of Gametraders Robina in his Super Smash Bros Brawl review.
Call Back / Web Animation