The internet is going crazy. They can't get their fix of digitized mayhem, gore, loot and gold. If you know what the significance of the number 37 is then you're right in the middle of it. The Lord of Terror is causing devastation and death and there's nothing you can do to stop it. Barred on the other side of the wall, helpless, hopeless and filled with desperation.
It is happening now, it has happened before, and it will surely to happen again.
We've all been there in the past, when the servers crashed. Feverishly smashing 'log in' and hoping that the servers had fixed themselves in the 5 seconds since the last time and instead, without realizing, guaranteeing that our focused DDoS attacks would keep Blizzard down even longer. Kotaku summed it up nicely earlier today, and the gravity of the situation persists. This is, as it stands, not just a problem with how Blizzard has decided to structure their servers for Diablo III. It's a problem inherent in the online gaming world, and the problem is not going away. There is an extreme demand for online gaming, and the demand is growing, as casual games attract larger and larger markets the entry point into "gaming" has become so accessible to anyone that it's entirely possible your next door neighbor is cursing Error 37 right along with you.