The benchmarks on the early test models were pretty impressive. I dont have the link right now, il see if i can find it.
Other good choices are the opteron series from AMD, very overclockable, nice for multi-threaded tasks, and gaming.
AMD is also comming out with their new socket AM2 soon, so you might want to wait and see how they perform. You can see some benchmarks on anandtech.com
Also, im sure there are loads of AMD vs Intel threads
My current specs:
Biostar TPower x58
XFI GTX260 Black Edition
640 WD Caviar Black
Vista Home Premium x64