The Inauguration of Barack Obama and Historic Events

Why was the historic inauguration of Barack Obama such a big deal? Can't we see an inauguration every 4 years?

I believe the excitement for this inauguration had everything to do with its historic nature. How many times in your lifetime do you experience historic events? I would classify historic events as things like the terrorist attacks of 2001, Hurricane Katrina, landing on the moon, and such events. You may experience a historic event every year of you lifetime. The difference between the inauguration and most historic events is that you could plan to be part of the event. Most historic events happen without much warning...you couldn't really plan to be part of Sept. 11, 2001, unless you were involved with a terrorist organization. You could plan to be at the World Series and hope the Chicago Cubs would win for the first time in 100 years, but they may (probably would) lose. It is unusual to have an event of this proportion with 2 months to plan for.