* '''''432.''''' Even if it was Joel trolling people who believe that songs pitched down to 432 Hz have magic properties, it is nonetheless ''horrifying'' to listen to.
* That voice from "Sleepless" sounds utterly disturbing.
* The mau5heads, when not UglyCute.
* The very end of the music video for "Professional Griefers". After the robotic version of [=Deadmau5=]'s cat Meowingtons causes [[ItMakesSenseInContext a giant robot mouse to crush the dome containing the audience]], we see the cat standing on debris eyeing the camera [[JumpScare before pouncing on it.]]
* Of course, one entry had to come out of a song titled "Terrors In My Head". At 2:35 a distorted sample from a video by [[https://www.youtube.com/user/GentleWhispering GentleWhispering]] supported by depressing piano. [[https://www.youtube.com/watch?v=QPhc-L0JXFc Original video]].
* [[https://www.youtube.com/watch?v=DsDesmCjjJo While performing "Maths" live]], the music suddenly starts skipping and the big shape that Joel's behind (sorta like Music/DaftPunk's pyramid) displays a Windows error prompt and "logs off". Joel's [=mau5head=] then lights up and [[MadnessMantra repeatedly]] chants the phrase ''"Sometimes things get complicated..."'' in an extremely creepy voice, not to mention the [[VoiceOfTheLegion layering]] that it receives.
* "Take Care of the Proper Paperwork" is pure NothingIsScarier. The distorted instrumentals and dark ambience are already unnerving, but the fact that there is no real drop or even kick drum at any point in the song leaves a really empty, hollow feeling, especially since the song abruptly cuts off by the end.
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