Thanks!
I thought there was abit of a stop motion look, but would never compare my work to the great mans....only that it's a monster that's being animated. Also, it's probably enforced by some "stuttering" when he turns round. I could fix it with a few keyframe changes, but I'm almost loath to as I like that look...brings back memories.
The explosion does add to it and it's one of the things I'm going to fix. It dies out too fast for my liking. It also puts nice highlighting on the troll. He'll be in the lights more in the second half.