Some make me cry how things were implemented ingame, rather unspectacular in comparison to the original art.
Also many of the creatures were cut down to fit the existing skeletons. Maybe ANet needs some more 3d modelers/animators to keep up with the creativity of their fine artists?
It is so sad to see how much potential gets "lost in translation" to GW!

See this thread at conceptart.org:
http://www.conceptart.org/forums/sho...=108591&page=1
And some more examples of golems and destroyer/tannek weapons:

We got only the most generic model. It probably fit an existing 3d skeleton the most.
These destroyer weapons actually look good. The sword is a shame ingame, while the axe looks even a bit better. The Wand and Focus are much more fiery.