TUAW:

There’s a copy of the U.S. Constitution on each and every Mac in the Dictionary app.

You’ll not only find such exciting information as who was on the editorial staff and advisory board for the Dictionary, but also a bunch of useful references.

In addition to the aforementioned Constitution of the United States of America, there’s also a complete Language Guide, a history of the English language, a list of the fifty states and each state capital, a list of every President of the U.S. from George Washington to George W. Bush (not sure what happened to the current incumbent…), the Declaration of Independence, a list of countries of the world, a list of chemical elements from hydrogen to meitnerium, a cross-reference of standard to metric measure conversions, and the Arabic, Hebrew, Greek and Russian alphabets.

Kind of interesting, especially for us trivia nerds, but a little odd to have this info buried in the Dictionary app.