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: Citizen Kane
Awesome Music: The score by Bernard Herrmann. Special mentions goes to the ending scene where the soundtrack booms ominously when we see the smoke of the Rosebud sled rise out of Xanadu's chimney.
Not really. The scream preceeds Wells trashing Susan's room.
His memory of Susan's departure is parodied by a jolting cut to a screeching white cockatoo flapping off the balcony at Xanadu - a visually startling image. Psychologically shocked by her exit and regressing into an uncontrollable, childlike tantrum, Kane in a robot-like posture violently tears her room apart in a rage.
There's also another instance with a woman screaming outside Kane's tent while Susan argues with him. There's a motif there.
Crazy Awesome: Young Kane. His method of revitalising a failing newspaper is to move into the editor's office so that he'll always be close when news happens. It works spectacularly.
Fandom Heresy/Sacred Cow: The quickest way a critic or film school teacher can kill their street cred is to trash this film.
Hilarious in Hindsight: Kane states he's going to the Western Manhattan Warehouse in NJ to look through his old stuff from his boyhood (his sled, presumably). During restoration efforts, a lone 35mm master negative and soundtrack of Orson Welles' The Tragedy of Othello: The Moor of Venice (1952), long thought to have been destroyed, was found at the Western Manhattan Warehouse.
Hype Backlash: Big time. When you have people always boasting about this movie and its reputation, this will be inevitable.
One-Scene Wonder: Portraying Kane's mother, Agnes Moorehead proved her potential as a movie actress through only a few minutes of screentime and dialogue.
Seinfeld Is Unfunny: Those who don't hold the movie on a pedestal tend to go in this direction instead.
Vindicated by History: Probably the greatest example of this. William Randolph Hearst essentially got Orson Welles stonewalled in Hollywood after the release of Citizen Kane.It barely made a cent at the box office and actually got booed out of the building every time it was mentioned during that year's Academy Awards. Years down the road, Citizen Kane would go on to be considered one of the greatest and most influential films ever made.