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.
Most of the cameo Smurfs, like Clueless or Greedy.
Moral Event Horizon: While Gargamel's still a funny guy, that still does not make it the least bit excusable that he threatened to let Vexy and Hackus die unless Smurfette gave him the formula for Papa Smurf's secret potion. Oddly, that just makes it easier for you to laugh when Hilarity Ensues at his expense, particularly during The Stinger.
She Really Can Act: Katy Perry does an excellent job pulling some dramatic scenes as Smurfette.