http://www.usconstitution.net/const.html#PreambleWorth a(nother) read. Stunning in it's majesty.
-The last line of the Constitution talks about Congressional pay raises. We've effectively limited Congressional pay raises to every other year instead of every year- by Amendment. Interesting.
-The Legislative Branch<Art. 1> comes before the Executive Branch<Art. 2>...
-...which come before the Judicial Branch<Art. 3>. (The Founders probably considered the order ;) )
-Article VI says: "The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution; but no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States." (Hmmm, another mention of religion besides the 1ST Amendment)
-2,4,6 and lifetime terms. Elegant.
-Article 2, Sec. 4. That's a doosey!
ETC...
Takes only 10-15 minutes to read and understand.