The Haunted Mansion/YMMV

The actual ride:

 * Broken Base: Not every member of the, surprisingly large, Haunted Mansion fanbase agrees with recent updates to the ride, some even going as far as to disown it and the fandom, the WDW queue additions drawing some of the most intense flame wars.
 * Complete Monster: The Phantom in Phantom Manor - he kills Melanie's groom hanging him in the Stretching Room, condemns the Bride to haunt the mansion forever and now he taunts the guests (that's "us") with his sadistic tricks and humor.
 * Perhaps taking a page from the Paris attraction, recent upgrades to the original ride included a notable break from the theme of spooky but harmless haunts with Constance Hatchaway, a murderous black widow bride who offed her various husbands for their personal wealth.
 * Crowning Music of Awesome: Especially Phantom Manor
 * Ear Worm: "Grim Grinning Ghosts," the ride's theme.
 * Ensemble Darkhorse: The Hitchhiking Ghosts and the long-since removed Hatbox Ghost
 * Germans Love David Hasselhoff: French people love the American Old West, which is why Phantom Manor is in Frontierland and draws a lot of its plot from old Westerns.
 * Nightmare Fuel/High Octane Nightmare Fuel: It is a ghost ride after all.
 * Special Effect Failure: The ballroom dancers are the result of the "Pepper's Ghost" effect, which uses a large mirror. One small problem: because mirrors, by definition, reverse, the women are leading the men. The Imagineers always regretted that, but the effect is too large-scale and elaborate (it's the largest "Pepper's Ghost" in the world) to fix.
 * The Hatbox Ghost was removed because they could just never get the lighting trick to work right; his original head was always visible.

The video game:

 * Needs More Love

The Film:

 * Complete Monster:
 * Hilarious in Hindsight: This routine by Eddie Murphy (NSFW language). Now, what were you saying about leaving if the house was haunted, Mr. Murphy?
 * Magnificent Bastard:
 * Narm: Eddie Murphy's "Oh, no!" after comes across as incredibly contrived.
 * As does his "I love you" which completely lacks emotion.
 * Nightmare Fuel