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.
Asspull: Q never once explains to Bond that the infra-red underwater camera has a built-in Geiger counter (only that the watch does) which comes as something of a surprise when Domino uses it later on in the film.
The theme. Tom Jones actually passed out after holding that really long note at the end.
Johnny Cash and Shirley Bassey also recorded their own themes (the latter was called "Mr Kiss-Kiss Bang-Bang"); the Tom Jones one was just deemed the best. But both of them are pretty good in their own ways (though the Cash one is a bit out-of place since its country).
Bond on the overcranked stretching machine Death Trap is supposed to be something that has the audience on the edge of their seats, but it just looks ridiculous.
The name "Disco Volante". Yes, it means "Flying Saucer" in Italian, but "disco" has other connotations nowadays.
One-Scene Wonder: Patricia Fearing the nurse, especially when she's being massaged.
Seinfeld Is Unfunny: The plot using a nuclear weapon to extort a ransom was considered a unique idea when this film came out, now it's arguably the most cliched Evil Plan in the book.
Shameful Strip: Bond arguably does this to Patricia the nurse— in a public sauna of all places— when he blackmails her into having sex with him (see Unfortunate Implications below). The "no means yes" style smile does not make it easier to watch.
Unfortunate Implications: As addressed on the main page under Sexual Extortion, it appears that Bond has it so bad for poor nurse Patricia Fearing that when she's genuinely afraid of losing her job over the stretching machine incident he blackmails her into having sex with him. True she initially says no with a smile as if to imply that "no means yes" but it doesn't really change the fact that Bond sexually humiliated Patricia by forcing her to degrade and disrobe herself— in a public sauna no less— just for his own satisfaction. The fact that later on she appears to be happy as a clam after their tryst is meant to reassure the audience that the encounter and feelings were consensual and mutual and that no real harm was done to her just comes off being more disturbing as Bond massages her naked body.
Woobie: Domino, she's the mistress of a sadist, her brother gets murdered and Bond is using her to get to Largo.