Charlie the Unicorn/YMMV

Alas, Poor Scrappy: As creepy/annoying they were, the reveal they were dead puppets used by gods to torture Charlie, invoked some sympathy for Pink and Blue.
Alternate Character Interpretation: Quite a lot, one of the most obvious being the proposition that the two unicorns are in fact a pair of sadistic psychopaths bent on psychologically torturing Charlie through their facade of being sickening cutesies. See the Wild Mass Guessing page for more.
Drinking Game: Try watching all three of them in a row, taking a drink every time Charlie is named.
Ear Worm: All songs are, but "In The Ocean Blue" deserves a honorable mention.
Everyone Is Jesus in Purgatory: Charlie indulges in this in the third episode, when he conjectures that he's already dead and the other two unicorns are his eternal punishment.
Memetic Mutation: "Shun the non-believer!"
Squick: The pink and blue unicorns ask Charlie to grab on to their absurdly long tongues twice in the third video. This is Charlie's reaction.
Tear Jerker: The flashback to when Pink and Blue were possessed. Pink leaves Blue for a moment to investigate a weird noise, they come back possessed acting the way we know them to act. Blue (pre-possessed) sounds genuinely shaken/worried for their friend, before they get possessed. Poor things got their lives taken in away in a flash.
Ugly Cute: The sea... goat... thing. Which looks a lot like Capricorn.

Charlie: I can't tell if you're adorable or creepy...probably gonna go with creepy.