In many places related to StarCraft and World of Warcraft there is a number "54". Is it really just a part of the decoration, or it has a special, secret meaning?
](http://starcraft.wikia.com/wiki/Orbital_command)
Below are a few links, mostly to discussions on the forums:
What does this number mean under my portrait?
http://us.battle.net/sc2/en/forum/topic/2065790412
Factory 54
http://eu.battle.net/sc2/en/forum/topic/2123514125
54
http://us.battle.net/sc2/en/forum/topic/375108203
Bunker 54
http://starcraft.wikia.com/wiki/Bunker_54
UPDATE: modified the question to address Blizzard games in general