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.
Last Note Nightmare: "The Day After the Revolution", the final song of This is Hardcore, finishes with approximately ten minutes' worth of quiet, swirling ambient noise. Part way through, Jarvis Cocker says "bye-bye" and makes you jump out of your skin.
Sadly, this is edited out of the American release, but it's at the cost of adding their well-liked but otherwise hard to find soundtrack contribution "Like A Friend" to the track list, making it at least a fair trade-off.
Magnum Opus: Generally Different Class is considered this, although fans have also made cases for His 'N' Hers and This is Hardcore.