I saw the Harold and Kumar Christmas movie the other day and I have to say, I was actually impressed. While it could have been very hokey, they did a great job with it and it's one of the few movies where I actually got something out of the 3D (besides a clay-mation penis in the face). While the whole movie doesn't necessarily utilize the 3D, what didn't was still a good, fun Holiday story. It's up there with Die Hard, Scrooged, and Christmas Vacation for favorite seasonal movies for me.
Besides, if you don't see it - Danny Trejo comes to your house nightly and watches you sleep.