In light of the CO and UA partnership, and the CHANGE it has brought forth in both carriers - namely, to make Continental's and United's combined route network and offerings the best airline system on the planet by mid-2010 - I propose the following theme song, the oldie-but-goodie "Ain't No Stopping Us Now" by McFadden & Whitehead:

http://www.youtube.com/watch?v=DY0tsKCB4lc

The lyrics of the first verse are quite fitting:

There's been so many things that's held us down.
But now it looks like things are finally comin' around.
I know we've got, a long long way to go,
and where we'll end up, I don't know.
But we won't let nothin' hold us back,
we're putting our selves together,
we're polishing up our act!
If you felt we've been held down before,
I know you'll refuse to be held down anymore!

Don't you let nothing, nothing,
Stand in your way!
I want ya'll to listen, listen,
to every word I say, every word I say!

Ain't No Stoppin Us Now!
We're on the move!
Ain't No Stoppin Us Now!
We've got the groove!