The only difference is graphics, but if you really like them, check out leisurebytel.com for a Canadian model. The bikes I looked at ended up being about the same price as U.S. retail by the time shipping/etc. is added, but could be worth it if the model you're looking at sells for full retail or is hard to come by here.
You can have a dealer import a Fireblade from Canada or Europe. The dealer will have to make a few modifications to the spec's because of federal regulations and stuff. I have a friend who is eyeing up a black/silver Fireblade. I think he's waiting to get rid of his current bike first.