Ideas for music to play at formal event?

[DisneyFan25863]

Hi everyone,
This Thursday, our school is having its grand opening dedication ceremony. This is going to be a really really posh event, with over 1200 people invited, including all the big faces around here. The Mayor, City Council, Superintendent, School Board, Congressmen Buck McKeon, and other dignitaries. I am producing the audio and television production of the event, which is going to be broadcast live to every classroom as well as Public Access Television. Part of my job is finding music to play for the event. I really am at a blank for what to play when people are introduced, moments where nothing is really happening, etc. I'm envisioning an "Academy Awards" style thing. Anyone have any ideas for songs, or even websites that have little clips to download? Thanks!