One of my favorite parts of the content teasers is the concept art wallpaper that is released with every one. Those things are beautiful and i have every one since the release of the game pretty much set on a rotation on my desktop.
Shout-out to the concept artist/’s who is/are responsible for them.
In general I think Arena-net has probably the best artists in the industry. Every now and then, i crank EVERYTHING to full and suffer the 3-5fps for a few moments just to soak in the beauty of the game.