Remember passing this while leveling my gnome priest, spotted it once in the corner of my eye then thought "I didn't just see that".
Went back again, took a good look and had a good laugh, I absolutely love such easter eggs.
'To laugh at your own mistakes can lengthen your life, but to laugh at the mistakes of others can shorten it.'
The reference is from a movie about a guy who is american traveling to the future... I see you're right this just proves how biased Blizzard is towards Americans!!! (Did you look at the Cataclysm Launch times for EU vs US last week? Blizzard is a company, therefore care little for patriotism.)