Icelandic Bank (Not-so-useful Unique Building.)
Runs up a tremendous debt which forces you to mortgage *everything* to the other civs.
Swedish Green Party (Not-so-useful Unique Unit)
Hates nuclear power so much that it forces you to buy very expensive coal power from other countries instead.
Greece (Not-so-useful vassal) Has to be rescued from its own economic incompetence all the time, or else your own civilization will go down too.
Swedish Porno Movies (Not-so-useful corporation unless you are Swedish)
All other civs have to pay lots of money to the producing country, and their economic output *and* birthrate tank because everybody just sits around watching porn all the time.
Robert Mugabe (Not-so-useful leader)
Special traits: not financial and not industrious. No other civ wants to vassalize his civ and will go to war with anyone who suggests they should.
Whales (Not-so-useful resource)
You aren't allowed to exploit it, and the area where the whales live is so infested with Greenpeace ships checking that everyone complies with the ban that ordinary fishing boats can't work there.
German Humorist (Not-so-funny Great Person)
No one in your civ will ever laugh again.
French Humorist 
confused: -making Great Person)
All your research facilities are tied up trying to figure out the point of the jokes.