I thought it looked epic... until the panda appeared. Sadly then it took a major turn for the worse. I didn't enjoy the humorous approach that Blizzard has there. Visually it's a very impressive clip though. I like that the human reminds me greatly of Warcraft II. It sort of takes you back to the whole Orcs vs. Humans setup, as the expansion is most of all about mortals. And the Pandaren is wearing nice-looking items. Despite this minor disappointment with the cinematic, I still believe the expansion itself will be enjoyable and I'll have a good time playing WoW.
Here are the previous opening cinematics.
For heaven's sake I miss Wrath of the Lich King. I loved every bit of that expansion, for me personally it was the best time on WoW, in a way I can't describe with words.
Well, what do you think about the MoP cinematic?