What are your favorite songs or albums for illustrating a deep soundstage?

Holst's The Planets, Sir Adrian Boult conducting The New Philharmonia Orchestra with Chorus. EMI ASD 2301.

Depth…

I remember using, for speaker positioning purposes, “Fade into You” by Mazzy Star, “The Golden Age” by Beck and “Someone Saved My Life Tonight” by Elton John for their big, deep sound, but my choice of these tracks I think came down just as much to how dirt simple the percussion is.  
The “centering” and “physical presence” of those snare drum hits (again, dirt simple, just the 2 and the 4 of each measure) was easy to locate and use as a very “visual” centering “fulcrum” of the whole activity.