I've seen several of the Hyjal preview movies made by people and submitted on WCM and they're mostly from the old uncompleted versions of the area. They therefore only really show what the terrain looks like and not how the instance actually functions. This movie was taken on the current PTR and displays the various camps and their respective leaders as the you traverse the mountain towards Nordrassil.
I created this movie primarily to give as good a view of the new Hyjal instance to anyone who doesn't have access to the PTR or isn't honoured with the violet eye, but also to exercise the creative juices a bit as they've been lacking recently. The song is taken from the Rome Total War soundtrack and I didn't aim to put in lots of flashy random effects but more to use various cinematic effects to show off the beautiful errain and level design. I hope you enjoy it and please leave a rating (no 'omg its shit 1/1/1/1' please) ;).
Note: Criticisms are welcome as long as they're constructive :)