Flubber/YMMV

Non Sequitur Scene: The "Copacabana" CGI dance number, which was pretty much just made for the trailers and to pad time.
Designated Hero: Professor Brainard is supposed to be "comically" absent-minded, but just comes off as a self-centered jerk.
- Or audiences are just full of more oversensitive fussbudgets than they were when the original was made.
Ensemble Darkhorse: Weebo. Her creation was by complete accident accident and she is one of the few A.I.'s in movie history to display human-like emotion and quirks. She's hopelessly in love with Brainard and sabotages his wedding so she can have him. Yet she cares about him enough to at least help him on his quest to win Sara back. She's got a great sense of humor, uses clips from old movies to express things she can't say out loud and is extremely intelligent. Especially intelligent enough to create a holographic human form and a backup copy of her programming with a few modifications.
Esoteric Happy Ending: The ending with Braniard attending wedding #4 from his lab by video proxy was supposed to be a cute, fitting end to the movie. Didn't quite work for some.
Fridge Brilliance: Brainard seems like he's being a jerk by repeatedly trying to show off Flubber to Sara when he should just be trying to make it up to her for missing the wedding. But she's also the president of the college, so she's the one he needs to be pitching his plans to "save the college" to, relationship or not. Their relationship happens to be a really inconvenient coincidence (and a good example of why inter-office relationships are usually forbidden). Maybe less "fridge brilliance" and more "stuff that should have been clearer to the audience."
Fridge Logic: How Weebo can fly before Brainard invents the Flubber hover technology? And why wouldn't this work with cars?
- Weebo in general create numerous problems because the technology is so fantastic. Not the least of which is that why, if the professor has basically created an emoting, flying AI with vast uses and abilities, does nobody think to sell her or her technology for the money to save the college? Naturally, the original film did not have this problem - Brainard just had a normal, non-talking dog that he tended to explain stuff to so the audience wouldn't think he just talked to himself for the hell of it.
- Dr. Brainard forgot his own wedding three times (at least twice). Even if this was before the age of cell phones with schedule functions, he couldn't invent a wacky reminding machine? Sure Weebo kept sabotaging his attempts to keep schedule because she loved him, but you think he'd have had more important ways to remember the wedding.
- Roger Ebert brings up this very topic in his review of the film. Though early in the film, Wilson openly states that he steals all of Brainard's creations and profits off of them, there's still a number of objects in his home that he clearly could have sold on his own (like Weebo!)
  - It's explained that Brainard has tried but can't replicate the technology that created Weebo and is his only remaining creation, not stolen by Phillip's rival, Wilson. The only plans to a her, in the form of her "daughter", only appears in a video will after her "death".
Informed Wrongness: Despite the fact that Phillip has just blown off a third wedding ceremony due to his absent-mindedness, the movie attempts to make it look like Dr. Reynolds' Tranquil Fury response - and subsequent breaking things off - to his half apology/half "But look at this cool thing I made" exhibition was an emotional overreaction.
Misblamed: Some of the particularly obnoxious plot elements, including abandoning Sara at the altar over and over, are carried over unaltered from the original film. Of course, one could still criticize this film for not fixing them in the first place.
- One could, but then one would likely be criticizing the film for having an annoyingly perfect lead who has no real conflict in their life other than the villain.
Replacement Scrappy: The original film featured the Professor often talking to his non-sentient dog when he needed to infodump on the audience. The remake replaces the dog with Weebo. While she's not exactly a hated character, the existence of a sentient machine completely trumps the invention of Flubber if the audience thinks about it.
Squick: The entire subplot with Weebo's lust for the professor, progressing into creating a sexy female hologram so she can act out her emotions for him physically when he's asleep, and finally the admission at the end of the film that upon her death, she gave Brainard a copy of her design - with modifications based on both Weebo and him. In case the analogy hasn't bludgeoned you hard enough, Weebo's final thought that allows Brainard to find the file? The word stork.
- She even refers to the new design as "our daughter".
Why Would Anyone Take Him Back?: Most women in Dr. Reynolds' position would've left Phillip and not looked back after one missed wedding, let alone two more. (Heartfelt confession of love or not.)