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: "Someone Like You", and every live performance of it.
BBW: She doesn't have the sassy attitude associated with the trope, but her chubby looks is part of what endears her to a big part of her fandom, and she goes for a classier, more classic aesthetic when compared to her raunchier contemporaries. And whether you're into her body type or not, pretty much everyone agrees she has a gorgeous face.
Hype Backlash: Par for the course for every popular artist, but the fact that she's actually injuring her voice causes trained (or more-trained) musicians to protest.
Incredibly Long Note: There's one in the middle of the first verse of "Rumour Has It". Listed under YMMV because it's only six counts and trails off at the end — long, yes, but not exactly eye-popping.
Memetic Badass: The "cocaine ninja" in the video for "Rolling in the Deep". It's actually a woman dancing in flour.
Narm Charm: Good lord, if half her songs were sung by someone else, it would come off as whiny. But Adele has such an amazing voice, that you believe every single word and every single vocal inflection. She could sing the back label of a toilet cleaner bottle and it would sound like the most profound thing ever.
Signature Song: Previously "Chasing Pavements", but now unquestionably "Rolling In the Deep," although "Someone Like You" may fit this more outside the United States.