I've felt a distant earthquake once, in Michigan (not exactly an earthquake zone) - it was deeply unnerving, particularly in an office on the fifth floor of an old factory building. I can't imagine being trapped amidst suddenly collapsing buildings, or knowing that it could potentially happen any time. I hope the worst is over and people have reconnecting with their families by now.
Also, I don't want to trivialize what the Japanese are going through, but why does Japan move in metric while the Earth moves in imperial units? Sheesh.