Up until recently, I had been content with the selection within my own (Canadian) Regional iTunes Store. However after reading about "Paper," the new Flipboard/Facebook mash-up App, I decided it was time to gain access to the US iTunes Store.
And now I will share it with you.
As you can derive from above, I am living in Canada and created a US iTunes account. Typically when creating an account a credit card from within the same country is required. There is a simple work around to "skip" providing this information.