We did get an earthquake here in Colorado too (2012 is approaching fast). I didn't feel it way over here in the Aspen valley, but maybe some of the Front Range people in the Denver area did. I think it was a 5.2 or a 5.8, can't remember which. The news did say that it was VERY rare for us to get earthquakes.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless