Good song for use, as well as Paradigm Shift by Liquid Tension Experiment.
I use a variety of songs to test different aspects of the system. Here are some of my list:
For low frequency extension while blending with the front stage, I listen to these:
Ayreon - Day Three Pain
NIN - No you Don't
Hans Zimmer - The Kraken (Pirates sound track)
Orphaned Land - Ocean Land
Tracy Chapman - Fast Car
For checking midbass and imaging:
Aphex Twin - Girl Boy Song
Talking Heads - Papa Legba
Checking for a sibilant tweeter:
Boston - Amanda
Boston - Living for You
For vocals:
Bruce Springsteen - Streets of Philadelphia
Evanescence - Hello
Rush - Resist
Listening for small details and noise:
K-PAX Sound track - July 27th (the 2:00 mark also has some nice low end and then after that, it's very soft and you can really pick out noise and other artifacts... if set up correctly, there are all sorts of neat sounds in this part)
K-PAX Sound track - New Mexico
For sub and midbass transient response:
DragonForce - Storming The Burning Fields
Quo Vadis - On The Shore Of Ithaca
Bury Your Dead - Eyes Wide Shut
I use most, if not all, of those songs when I'm setting things up. I also listen to them a lot as I enjoy all them.