I'll go out on a limb here and throw in my two fav's: First)Dire Straits - On Every Street. This CD has a wide range of musical styles on it. From aucoustical guitar to low end thump. Country/Western, Rock, Jazz, Vocals...it has everything! Second) Nine Inch Nails - The Perfect Drug. It has three or four songs on it and some of the biggest, deepest, quickest bass I have ever heard. I used that on e alot in my old Mazda MX3 (two Solo-Baric 10"). I don't dare even trying to play it in the Contour as I haven't bought subs yet (well, I have one OOOOOOLD Clarion 8" powered tube, but that's not really up to the task!) Most of Nine Inch Nails work is good for pushing the limits of your system.
Just my .02!
