These are a few tracks from the Boston Acoustics Test CD:
Incubus-Stellar
-deep bass with excellent range of vocals
Cash Money Millionaires-Project *****
-phenomenal bass
Big Tymers-#1 Stunna
-more phenomenal bass
R. Kelly-I Wish
-bass almost bottoms out my Bose home system!
Green Day-Minority
-great guitar dynamic range
Also, look for sections in stores called "Bass". Pure bass music...Bass Outlaws, Bass Extreme, Stereo Bass. All killer. But Celine Dion's Falling Into You is a great test of the top end. Or just get some THX/Dolby Digital/DTS samples from Napster. Trust me, I love this kinda stuff. Email me with questions or if you'd like to grab them from me via Napster.