Quatloos!

Cheyenne Wyoming used to be known largely for cattle and oil, now it seems to be home to a new "cottage" industry. I think some, if not several, of our previous mentionees in this forum have made use of this apparently very popular service.
little Shell Company on the Plains

From the article, this has to be the best quote ever:

"In the U.S., (business incorporation) is completely unregulated," says Jason Sharman, a professor at Griffith University in Nathan, Australia, who is preparing a study for the World Bank on corporate formation worldwide. "Somalia has slightly higher standards than Wyoming and Nevada."

I'm a Nevada resident, and I can assure you that there are people here whose sole business is to form corporations for out of state businesses and wealthy people.

The running joke is that these folks are "in the business business".