I voted for a hoax on the list, but I do have to mention the 1988 NPR All Things Considered story reporting on Canada's purchase of Arizona. The benefits included balancing the U.S. budget, and of course Canada's acquisition of a warm water port.
They had interviews with then-Governor Babbitt and the Canadian ambassador (sorry, don't recall his name) both of whom delivered a straightforward analysis of the consequences of this historic moment. It was wonderful.
Sadly, I can't seem to locate an audio file.