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.
Covered Up: "Eyesight to the Blind" was originally by Sonny Boy Williamson II. The Who had also intended to use Mose Allison's "Young Man Blues" on the album, but couldn't find room for it, and so it had to wait until Live At Leeds to be covered.
On top of that, when the Who performed Tommy on tour in 1989, they used Eric Clapton's arrangement of Eyesight, from The Movie, rather than their own arrangement from the album.
Faux Symbolism: In the film, it's quite apparent that director Ken Russell has never met a piece of symbolism he couldn't beat his viewers over the head with.
Heartwarming Moments: Is there anyone who doesn't get choked up listening to "Listening To You"?
Hilarious in Hindsight: In "Go To The Mirror!" the doctor thinks about the isolation shock caused when/if Tommy's senses return. When he does get them back, he mobilizes his cult of personality. Subverted later when his followers leave him thanks to the unorthodox views he got from his experiences.
Another movie example: When Rod Stewart asked Elton John if he should take the part of the Local Lad, Elton told him "don't touch it with a barge pole."
I Am Not Shazam: A common mistake even among the fans is to call the character who sings "Pinball Wizard", well, the Pinball Wizard (or, in the movie's case, Elton John). He's actually called the Local Lad, according to the scripts.
Moment Of Awesome: During the band's performance at Woodstock, the climactic moment of See Me, Feel Me happened to coincide precisely with the morning sun breaching the horizon. The group had a lighting rig (then a rarity) constructed to replicate this effect for later performances.
Squick/Nightmare Fuel: Every one of the three Villain Songs. What the Acid Queen does to Tommy and what Kevin do to him are one after the other on the album (though separated by a ten-minute long psychedelic instrumental), making things worse.
"Fiddle About" has Tommy's UncleErniemolesting him. What's considerably worse is that a significant part of the fandom thinks that it's okay only because Ernie's played by the drummer, Keith Moon, in The Movie. Yeah, that certainly makes sense.