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 soundtrack is quite well done for such an obscure title. All of the character variations to each level theme add a lot of variety to the soundtrack, the boss themes from the Updated Re-release are tense and fitting and the theme song is quite rockin' and wouldn't sound out of place to the attract mode of an arcade game.
Gotta give some love to the loading screen theme as well.
"Funny Aneurysm" Moment: Even if it was part of an homage to King Kong, having a biplane crash into the telecommunications tower of the World Quack Center tends to leave a bit of a bad taste nowadays.
Hell Is That Noise: The newly-added bonus levels in the PS2 port have you play as a flea living on one of the Fur Fighters, who's trying to fight off other invading fleas. The enemy fleas shriek when they hunt for you throughout the forest of hair/feathers/scales. And there are dozens of them.
What an Idiot: Right in the intro sequence, General Viggo sweeps over Fur Fighter Village with Knockout Gas and invades the place. Rather than do the pragmatic thing and, you know, have his oldest and most dangerous enemies - who have foiled him before, and are completely at his mercy now - all shot, he settles for kidnapping their kids and their wives/husband/mother in an attempt to dissuade them from trying to stop him. Gee, that'll sure dissuade themallright. Though of course, if he did the pragmatic thing, Fur Fighters would've been a very short (as well as pointless and tragic) game.