[youtube]FtotOce2vkk&feature=related[/youtube]
in it you can see a massive battle versus some kind of crystalised dragon type creature. There may be sound and commentary on the video, but i can't hear it as i don't have sound at work, but looks like a kewl battle.
something else i noticed in the video that I haven't seen talked about in any interviews or blogs or anything like that is the Map Traveling. The thing i love about GW and hate about 99.9% of other MMORPG's is the map traveling systems they have. For me it can make or break the gameplay experience, as you don't wanna have to fight your way to some location just so you can travel to another location and shell out some cash. With Guild Wars it's like... unlock a location and go there whenever you like, which i feel really helps the community atmosphere of the game itself, as it centralises locations for people to gather, as when they wanna idle, they can go to their favourite location instantly, and it makes it look like a big active city... even if it's full of people dancing randomly in the streets to no music

main thing i worried about this game was the lack of this system, as in GW1 it was mainly there because the whole thing was instanced, so going to a city was just like unlocking a new level in the game and loading up that save point, whereas in GW2 it's a persistant world where everything is active and so may have been setup with a "flight master" type system
