So which one did you liked the best? Obviously each was unique and with a unique soundtrack in the background as well.
I actually really,really dig the scrapped Cataclysm screen... other than that my other favourite is the Burning Crusade.
If you don't know which scrapped screen i am talking about watch this video: (15:07)
This is also a video showing all the Login Screens so far, so check them out!