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.
Also Molly since its unclear if she's truly sociopathic or innocent. Granted, she really didn't seem to know what was going on and may have snapped a bit.
Critical Dissonance: Despite the praise by fans and a reasonably faithful English dub (even labeled as such by well-known dub hater Dogasu), the movie sits at a dismal 22% on Rotten Tomatoes. This may have been due to the bad taste the dub of Pokemon The First Movie left in people's mouths, and also possibly due to the dub itself being grating to parents' ears.
Crowning Music of Awesome: The English version was once again lucky to have Ralph Schuckett provide the orchestral score. Too bad that, save for one track (which is a medley), it remains unreleased.
Each of Molly's battles with Ash, Misty and Brock took place on a different plane. She battled Brock on the ground. Then she battled Misty underwater. And finally, Ash took his battle with Entei to the skies once Charizard arrived.
Ash's Cyndaquil/Totodile vs Entei makes sense if we think about it. Yes, two basic-stage Pokemon's type advantages don't mean much against a legendary. However, consider that Ash and company didn't expect the series of events themselves, and in addition, Ash didn't have anything better than Cyndaquil, Totodile, and perhaps Pikachu. (Noctowl does not resist Entei's attacks. Chikorita and Bulbasaur are even worse for obvious reasons.) Both Charizard and Squirtle (Ash's more battle-experienced water starter) were Put on a Bus some time before the movie's storyline, and because of why/how that was done, Ash could not summon them back via PC. Brock and Misty's Pokémon were already taken out by the time Ash battles Entei, so that essentially leaves Totodile and Cyndaquil as the best (albeit not very good) option possible for Ash had, until Charizard came back after finding out that Ash was in trouble through a news broadcast.
Surprisingly Improved Sequel: It's considered to be amongst the best (if not the best) of the Pokémon movies, up there with the Lucario and Keldeo movies, along with the Mewtwo movie if you consider its Japanese dub.
Squick: Brock flirting with teenage Molly could be this, considering Molly is actually a five-year-old girl.
Tear Jerker: When Delia Ketchum is kidnapped, Ash becomes very upset. "She's gone! ...I couldn't save her!"
Molly's story. Her mom is already gone at the start of the story (It was confirmed in the Japanese version that she left her father because he was a workaholic obsessed with finding the Unown), and then her father disappears from her life too, so she creates a whole new fantasy world so she can have the things she wants most. The thing she wants most of all? Her mother.
Entei's "death" scene is always guaranteed to bring on the waterworks.