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.
In the fine tradition of musical numbers falling into this trope, I present to you "If I Didn't Have You". It's like they asked themselves "How many useless pop culture references can we stuff in for a comic relief song?"
Covered Up: "The Prayer" is regularly covered as a serious classical-crossover piece with no connection given to the film.
Ensemble Dark Horse: Ruber has a fair number of fans who love him for his camp value and for punching a dragon in the face, while the Griffin is either this or the Scrappy.
The mechanical soldiers along with Bladebeak
Funny Moments: When Bladebeak beats up a guard, his hen wife (?) looks at Juliana as if to say "That's MY man."
Ham and Cheese: The tediously shallow villain is slightly salvaged by Gary Oldman's hamtastic performance.
Narm: We still would've been able to take Kayley's escape sequence seriously, had it not been for this:
"I pray you'll be my eyes..."
*human-weapon hybrids chase her on warthogs*
"... and watch her where she'll go..."
*axe-headed chicken runs past*
"The ogre's butt..."
Big, scary Griffin opens his beak and out comes... Balki's voice.
Ruber's Song, which, as is noted below, is not exactly the best. It gets especially narmy when he says "Now watch me create MY MECHANICAL ARMY with pride," mainly due to the incredibly stupid looking dance he does, which looks kind of like "The Robot."
The Scrappy: Kayley's probably the least liked character from the film as a whole.
Kayley's father's death at the beginning wasn't terribly sad (given that we barely got to know him), but his family finding out about it was pretty depressing.
Garrett declining to return to Camelot with Kayley after they retrieve Excalibur, saying he doesn't belong there. Turns out the real reason he doesn't want to go back is, despite being quite the bad ass, he'd appear inferior to Kayley when measured against the Knights of the Round Table (to whom he once hoped to belong), complete with a sad recall of his song (come on admit, it's hard not to feel bad for him here).
"She'd only see me through their eyes. Not a knight, not a man, not anything..."