I Have an [H] Dream
Messing around with the guys tonight in the video card forum, I came up with this as my next big move display-wise.
I figure once CrossFireX gets worked out and the 6 mini-DisplayPort card is to market, hopefully before Christmas, we should be able to pull this off! 
Here also is a GREAT HardForum thread from Pretzel showing you exactly what his own Eyefinity configuration netted himself. Single, portraits, and landscape setups compared.