In a FoxTrot story arc, Paige is babysitting Katie and she isn't allowed to watch TV as punishment for misbehavior. Katie repeats the name of the show ad nauseum the entire time she's being babysat.
Harmony (2016): Tilly and Iris watch an episode of Blue's Clues in the hotel on the way to the camp, even though they're too old for it, because it makes them feel nostalgic.
Yes, Dear: In "Arm-Prins", Greg is left to look after his son, Sammy, while Kim tries to sell her titular invention. Greg has Sammy watch a VHS of Blue's Clues while he runs to the bathroom after not peeing for six hours as a result of drinking too much iced tea. Turns out Sammy really wants to watch it, as Greg is forced to sit through it over 20 times. This eventually leads to him dreaming about being stuck in Steve's house. In The Stinger, Kim discovers Steve Burns is in her bed, and they make out.....in front of Greg.
Battle for Dream Island: In the Season 1 episode "The Glistening" and the Season 2 premiere "Yeah, Who? I Wanna Know", Leafy Blue-Skidoos to Yoyleland via a Map of Goiky. She does it again in episode 26 of Season 4.
Rerez: In the "Just Bad Games" video on the video game of Batman & Robin, Shane and Adam demonstrate how unintuitive and frustrating the game's clue-finding system is with a skit called "Clues Blues". The skit features Shane playing a Batman/Steve mash-up character trying and failing miserably to make sense of the clues left by Mr. Freeze that he has found. A yellow Blue parody also tries to help to no avail, resulting in Bat-Steve getting mad and dropping her off at the Gotham City pound.
SuperMarioLogan: In "Black Yoshi's Kids!", when Mario gives Black Yoshi his welfare check, Black Yoshi sings to the tune of "We Just Got a Letter":
We just got some welfare, We just got some welfare, We just got some welfare, How much is this check?
In one of Darius Benson's Vines, he shows the viewer that his sock has four holes in it that form a perfect paw print, and calls it a Blue's Clue.
Darius: Okay, look, normal people get regular holes in they socks, look at this. (shows the sock) Do you see this? It's a Blue's Clue. A Blue's Clue, like, look at it- (vine ends)
Animaniacs (2020) referenced the show during their song about reboots.
The Fairly OddParents!: One of the shows that the characters travel through in the TV movie "Channel Chasers" is a parody of this show called Clint's Hints hosted by an overly-enthusiastic guy with a shaving cut in a striped polo shirt named Jeff (played by Jason Marsden).
Family Guy: In "Meg Goes to College", just before Cleveland delivers Meg's college application to Peter, Peter sings "Mail Time" and dances the way Steve does.
MAD: In the sketch "Avaturd", Jake is attacked by a giant Blue.
In a sketch from "In Bed Surrounded by Loved Ones", Steve looks at the clues (a set of teeth, a squirrel foaming at the mouth, and a shotgun) and comes to the conclusion that Blue got bitten by a rabid squirrel and is begging for a mercy killing. But as he goes up to Blue and pulls out the gun, Steve lets it slip that he's actually doing this because Blue was planning to replace him with "some spotlight stealing son of a bitch named Joe". The sketch ends with Steve about to shoot Blue, only for her to lunge at him with a broken bottle.
A sketch from "Spike Fraser in: Should I Happen to Back Into a Horse" has Steve appear as a witness in a murder trial.
The Simpsons: In "Little Girl in the Big Ten", Lisa says that her college friends "don't have a 'Blue's Clue'" that she's only eight years old.
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