Really good watch, will eventually watch again, and can recommend, but less so for younger audiences.
I never remembered all the weird adult humor in this, it is usually just the charming grinchiness of Jim Carey's overacting that sticks with me, and maybe the Christmas spirit of Mary Lou Who.
The movie manages to ride this wonderfully line between keeping the spirit of the book (even rhyming at times) and being new and refreshing, but it does do that by playing to the adults that would have read the book as a child rather than endearing a new generation of children, but I think they intended to try to do both.
Jim Carey embodies the Grinch like no one else possibly could (I think Mike Myers proved that in "The Cat in the Hat"), and that is the majority of this so if you don't enjoy him, then you won't enjoy this movie. I do think they added some refreshing character interactions, though some of the execution is much better than others.
While it is far from a perfect movie, my biggest gripe is their stupid noses: it seriously bothers me the entire movie. It bothers me more than them dressing the Grinch, which points out that he is naked a LOT with his "co lead" being a young girl: you can see it just distracts from the spirit of the movie.
I don't think that everyone is going to love this movie, but it's hard to imagine that people will hate it.