Here's what I use:
Sibilance: New Order - True Faith
Timbre: Crimson Pirates (instruments), Blackmore's Night, Dire Straits - Brothers in Arms (album)
Bass: Dire Straits - Brothers in Arms (album), Acoustic Alchemy, rap/pop, 1812 Overture (the one with the sound warning on it)
Harmonic distortion: Acoustic Alchemy, Prong
Soundstage: Crimson Pirates