heheh though bjork in appearance and behavior is rather unique even in iceland..
well, i cant speak for everyone in iceland, but ive done the ole berserker a few times (though it used to take months to get me to that stage (though lately im more of the "if you fuck with me , you deserve what you get" (saves time and hassle)) (plus the berserker thing gets bit extreme, why go nuts when a single punch was enough?)
but the berserkers are usually very nice people.
the thing is, some asshole is bugging them and just doesnt let up despite the berserker saying "i wont fight you" or "leave me alone" or whatever lol
and then something snaps.
humm, though a true berserker state is not something you remember (the mind turns off and only the fury remains and then you wake up and everything is covered in blood (lol if a adult did that, but ive never heard of that happening and as a kid, well, there are alot of shocked faces and some blood (its rather rare))
you learn restraint and iceland is simply too nice a place to require berserking (though druglaws and eastern gangs entering the country might be changing that..)