For the record, the is no duty on digital cameras within the EU zone (obviously, this does not apply to the original poster, who is from Norway), so anyone importing digital cameras from the US should not pay duty. However, they may pay VAT, which is recoverable if you are registered.
I have imported, on separate occasions, Canon 5Ds and 20Ds without a problem. Remember too that if you intend buying extras, such as lenses, be sure to buy them at the same time. Otherwise, you will pay duty on them.
I am currently in the process of negotiating a deal on a H3D2 39Mp MS with my local dealer. The amount of money involved is far too much to be buying from a US dealer, in my opinion. If anything goes wrong, I want to be able to drive down the road to have it sorted! ;-)
D.