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.
Crowning Music of Awesome: The Zuckers and Abrahams were actually disappointed when the film ended up with a genuinely good score, rather than a cheesy one that would add to the parody. They probably shouldn't have hired Elmer Bernstein.
Dude, Not Funny!: The whole "Ever seen a grown man naked", and all related jokes that follow. They're the only jokes that make you wonder what was going through the Zucker Bros. minds when they wrote those.
The turban-wearing passenger who douses himself in gasoline and tries to blow himself up to avoid listening to Striker reminiscing. (Though he was probably meant to be East Indian rather than Middle-Eastern.)
The film itself has inevitably had this effect on Zero Hour, the major inspiration for its plot and many of its lines. It's downright surreal watching that film now and seeing lines like "I picked the wrong week to quit smoking" played completely straight.
The Scrappy: Johnny the control tower employee inspires this reaction from some viewers, especially during his For the Evulz moment with the runway lights. Others consider his antics to be one of the funniest things in the movie.