I have a couple suggestions for theme songs for 04:
(1) Fly Like An Eagle- Steve Miller Band
All sorts of goodies here: fly like an eagle, til i'm free, fly into the revolution, whoa whoa there's a solution, etc. Into the future...
(2) Feelin' Stronger Every Day- Chicago
This has a super long fade out where they just sing this over and over- and would be a good one for a message of hope, etc.
of course- my vote goes to
Son of a Bush by Public Enemy