Tommy/YMMV

Accidental Innuendo: The songs "See Me, Feel Me" and "Sensation".
Alternative Character Interpretation: For some reason, a good percentage of the Tommy Fandom (or perhaps Fan Dumb) seems to treat the Local Lad (especially the Elton John version) like he's a Sissy Villain simply for being Tommy's rival when it came to being a champion at Pinball. As an unfortunate result, he usually ends up being treated like either The Scrappy or an Asshole Victim.
Awesome Music: "I'm Free" for one, which feels a lot harder than it sounds.
Complete Monster: Uncle Ernie and Cousin Kevin.
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.
Ear Worm
Ensemble Darkhorse: Uncle Ernie, if you can believe it, has a whole host of fans.
- Same with Cousin Kevin, though not as much as Ernie.
- Both the Acid Queen and the Local Lad have plenty of fans, too, despite the latter's hatedom calling him The Scrappy.
Epic Riff
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.
- In the movie the Doctor was played by Jack Nicholson.
- 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 Uncle Ernie molesting 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.
Tear Jerker:

See me
Feel me
Touch me
Heal me

They Changed It, Now It Sucks: Could very well be part of why a lot of people in The Who Fan Dumb loathe the Elton John version of "Pinball Wizard" with an immense passion. (That, and/or perhaps because at one point his version got almost as popular as the original.) Even though it was Pete Townshend who made most of the real changes.
- Though if that's one of the reasons they hate it, then why don't they complain about most of the rest of the movie's changes?
What the Hell, Casting Agency?: For The Movie, you have Roger Daltrey, Ann-Margret, Elton John, Tina Turner, Eric Clapton, Keith Moon, John Entwistle, Pete Townshend...and Jack Nicholson. He does a pretty good job, for not being a singer.
The Woobie: Tommy might be the most epic example of this trope in music.