These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Broken Base: Very mildly. Fans tend to disagree on which Hardcore series was the best.
Complete Monster: PBG puts the Complete Monster label on EESDESESESR (err, the player's character) in My Sims Agents, who smashes trucks, steals parts from random machines, and essentially organ harvested a friendly robot without his consent.
Crosses the Line Twice: In his "Top 10 Jerks" video, not only does he kill all the kids in Skyrim, he piles them on a fire.
Ear Worm: From The Top Ten Jerks in Gaming, "I Like to Ski".
The "Smash The Truck" rap from the My Sims Agents review.
Him singing "Riding Dirty" in his Hacking Wind Waker video qualifies both as this and a CMOF.
Harsher in Hindsight: In episode 4 of Minecraft Hardcore 2 there's a joke about "Forever Alone Barry" that takes on a whole new light when he ends up being the last survivor in the finale.
So does the last episode of the first one: If you recall, Barry won his and Jon's duel at the end, meaning he was the sole survivor of that series.
McJones shouting "YOU TRAPPED ME IN" in the intro for Minecraft Hardcore #3 gets a lot darker when you realize it's what he says before Shane inadvertently traps him in a room filling with lava, leading to his death. Downplayed slightly in that McJones would probably have still died even if Shane hadn't trapped him.
Hilarious in Hindsight: In his "Top 10 Suckiest Enemies in Video Games" video, PBG said this: "Usually I don't talk about the Zelda CD-i games. Like Nintendo, I just prefer to pretend like they never existed.” 2 years later, he did a video on The Faces of Evil.
Memetic Badass: Smooth McGroove quickly became this, thanks to his Only Sane Man role. You Tube commenters put him on the same level as Barry and claimed he'd be the last man standing. They turned out be completely correct, as he outlived Shane by a few minutes.