Get used to it. Everyone Obama does will be hailed as historic. It's historic that he's using executive orders. It's historic that he went to the White House. Everything he does will be hailed as historic for a while, perhaps for the duration of this first term.
Above. Perhaps only for two years though. The media will get bored.
And, this was not a landslide. This was a healthy victory.
Obama has his mandate, though, so let's see where it goes. Someone is going to be ticked. He will either be as radical as I fear, and utterly turn off 55-60% of the population, or a centrist, and utterly disgust his base and the blogosphere.