Yesterday the 44th President of the United States took the Executive Oath of Office and a new era of presidential authority begins. President Obama's Inaugural Address was one of the shorter in the history of this tradition. Have a look at these resources to see how inaugural speeches have changed over time!
Bartleby has conveniently assembled all the Inaugural Addresses of every president since George Washington for your reading convenience. Visit their site and pick a favorite (or a few favorites...or all of them)!
You can also visit MetaFilter and see a century of Inaugural Address videos!