Principality of Sealand (entertaining)
I stumbled across this while searching for abandoned cities and sites in the world. This one isn't abandoned. Interesting thing, the Principality of Sealand recognizes seemingly random athletes and teams as the national team/athletes of Sealand.
I say the ISU Hockey team should become the national hockey team of the Principality of Sealand.
Anyway, weird stuff there.