's voice changes when he speaks for the Grinch. Originally he spoke in his "Narrator" voice throughout. After recording was complete, the highs in his voice were mechanically removed for the Grinch, giving him the gravelly voice heard in the finished version. See more
At the end when the sled full of Christmas stuff is on the mountaintop, it starts sliding off the edge. It's going fast enough that it should be long gone by the time the Grinch reaches it, but when he does it's still right near the top of the mountain. See more
Every Who down in Whoville liked Christmas a lot, but the Grinch, who lived just north of Whoville - did not. The Grinch hated Christmas - the whole Christmas season. Now, please don't ask why; no one quite knows the reason. It could be, perhaps, that his shoes were too tight. Or it could be that his head wasn't screwed on just right. But I think that the most likely reason of all... may have been that his heart was two sizes too small. But, whatever the reason, his heart or his ...