No matter how many times I watch this, I always cry a little at the end!

Sometimes it's not just the film itself, but the accompanying memories it elicits that make something a success. I recall my late mum always used to make sure we sat down in front of the telly at Christmas to watch this - and we probably saw it every year for about 30 years! Why? Well, it's an eminently watchable animation depicting a young lad who builds a snowman, only for it to come to life and take him on a few…