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.
YMMV: Joseph and the Amazing Technicolor Dreamcoat
Accidental Aesop: Don't play favourites with your children, or else they might sell said favourite into slavery.
"Joseph's coat". The harmonies are absolutely beautiful.
As exposition songs go, "Jacob & Sons" is incredibly catchy.
Big Lipped Alligator Moment: One minute Joseph is sitting hopelessly alone in his cell, the next he's suddenly surrounded by colorfully dressed children, bright flashing colors, women singing how great he will one day become, men in white leather jock straps with close ups on their crotches, and Father Time wearing sunglasses and a lei. Suddenly he's sitting around alone in his cell again.
Also, Pharaoh Elvis, who sings one song (and its reprise) that, while incredibly catchy and setting up for Joseph becoming ruler of Egypt, is otherwise never referenced or mentioned again afterward.
Ear Worm: The music just keeps coming back. All of it.
Ensemble Darkhorse: Several of the brothers can get this treatment, but the Pharaoh is especially popular despite his short stage-time. The narrator is also very popular because of the degree of her interactivity and sheer enthusiasm for the story and songs.
Epic Riff: There are quite a few throughout the show, but the very first (and the one which signals in the movie the movement from a silly low-budget school play led by a clumsy teacher to something truly awesome that will inspire the audience of students) appears at the very end of the Narrator's introductory song, when she strides down the aisle to let Joseph in for "Any Dream Will Do" and the special effects first start manifesting.
Incredibly Long Note: Builds to this with each verse of Those Canaan Days ("where diiiiiiiiiiiid they go"), until the final verse. Played differently depending on the production - the movie has the brothers intentionally stop, glance around at each other, nod, then repeat the note. Most school productions will play this as holding the note so long they run out of breath.