Well first impressions of the death night.  I will let this short vid tell the tail.  If you dont want spoilers dont watch.

The death knight starting zone is very well done. There are tons of quests and more importantly the quests are for the most part very well written and thought out. Overall it was a great first experience with the class. If you are not interested in leveling a death knight to 80 you should really check out and play through the starting zone. It is well worth the time.