the 2015 special
I think the stop motion animation is the best, there you have the tim burton movies, isle of dogs, coraline, the boxtrolls among others.
but aardman's animations are exceptionally funny, not only for their designs but for their way of telling stories. beyond arthur christmas I would say that my favorite was pirates and that is to see their plasticine characters move so naturally is fun and entertaining.
shaun the sheep is a series of short films about sheep doing mischief and in this movie it is the same but 85 minutes. and it's very funny, if you have not seen it, I recommend you see it. the plot is not very complex that we say but it is a cute and funny movie.