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.
Awesome Music: Lots of it, with Something/Anything? and A Wizard, a True Star being frequent contenders for Magnum Opus. The Beatles parodies on Utopia's Deface the Music are such effective pastiches that the track "I Just Want to Touch You" was rejected for inclusion on the soundtrack to the film Roadie because the filmmakers were afraid of getting sued for plagiarism.
Nightmare Fuel: The Night the Carousel Burnt Down, from Something/Anything. That ending especially—shivers....
Seasonal Rot: His output in the nineties is generally regarded as...not very good. His Noughties output is somewhat more warmly regarded, though rarely considered to be as good as his classic material.
Signature Song: Arguably "Hello It's Me". Also "I Saw the Light", "Can We Still Be Friends?", "We Gotta Get You a Woman", and "Bang the Drum All Day".