Wow! It was wild to see my post from 10 months ago refreshed and responded to again !! So cool!! Only a group like this continues to respond and help others with the knowledge they possess! That is so rare and so nice! I will add a few more ideas for you in a different vein:
Me'Shell N'Degeocello: You can't go wrong with most of her material - all her albums sport some really deep low end bass in an R&B style that is atmospheric, intelligent and highly, highly musical. Try Peace Beyond Passion, Comfort Woman or her latest disc - name escapes me - newest disc is more jazz oriented in nature but very hip.
Prince - New Power Generation - Love him or hate him - this disc sports some funky, funky low end. Not to mention, if you and the Mrs. are in need of a little 'somethin' 'somethin' to set things in motion this disc has some spots to get freaky!!
Marcus Miller - most of his newer material is dripping with low end funk. However, the first track that pops into my head is his remake of 'Boogie On Reggae Woman'. Now THAT'S a rump shaker!!
I would love to hear more from all of you if you still are game for suggestions. ESPECIALLY considering, as if the Tetons weren't enough, I went over the edge and added a 1000 watt Reimer sub w/ a 15 inch driver to my setup. My system is now equivalent to a wrecking ball of low end when it calls for it without being the least bit boomy. Just ask Neil over at Clearsound - he'll tell you!!