Yet taken on its own terms (i.e., pretend that you’ve never encountered this story before, as countless children who see this movie won’t have), “The Grinch” is a buoyant and agreeable entertainment, with a lead vocal performance, by Benedict Cumberbatch, that doesn’t try to bend the story, the way Carrey’s performance did (or Mike Myers’ in the 2003 live-action “The Cat in the Hat”), toward some misbegotten goal of hellzapoppin’ dump-truck anarchy.
It neither detracts from Dr. Seuss’ legacy (remember “The Cat in the Hat” ?) nor enhances it, being instead a serviceable expansion of a simple, redemptive story that didn’t need to be expanded but isn’t necessarily damaged by it.