The notorious pirate, Eustace the Monk, seized control of the island of Sark in 1205 and terrorised the Channel with piracy until killed at Sandwich in 1217. Take a look at http://en.wikipedia.org/wiki/Eustace_the_monk for more details

Sark was the last remaining feudal state in Europe before a democratic system was put in place in 2008.

Sark is home to the smallest jail in the world.  Built in 1856 this prison can only hold two people.  Sark's police officer has the power to hold somebody for 48 hours, after which they must be moved to Guernsey for trial, or released.

In August 1990, André Gardes, an unemployed French nuclear physicist tried to single-handedly invade Sark. He was armed with a semi-automatic assault riffle and 260 rounds of ammunition. On arrival he placed signs which stated his intent to take-over the island at noon the next day. He was arrested by the island's volunteer Constable while sitting on a bench, changing the gun's magazine and waiting for noon.