I would like to share a few of these with everyone here if you haven't seen them already, they are stunning examples of what can be achieved with 3D and 2D animation.
This video includes all of the opening cinematic's of the past 10 years. Each one has a completely different feel and atmosphere, whilst retaining its fantasy and story roots.
Personally my favourite of them all is the Third cinematic, from Wrath of the Lich king, compared to the previous ones and even the newer cinematic's it has a much more calming, sombre feel. If you know anything about the character featured in the trailer you will know why this relates so well to him. The art direction is beautiful and striking, leaving you wanting more, it definitely had that effect on me all those years ago
If you want to see some more of their animations, search for the Lords of War series on youtube, the style is very different to these cg trailers but is still amazing nonetheless.