I know this has been thrashed around before but I did a search and I dont see anything recently, so here goes.
1st hand story (no urban legends) of ridiculous lawsuits that were won. my personal favorite is:
A guy is working at his desk,(his office is at the end of the street and at the bottom of the hill), he gazes out the window and sees a worker leave his garbage truck and the truck has started to roll down the hill right towards this guy. so he jumps up and tries to run out of the office and trips on the desk injuring his knee. In the meantime the driver has chased the truck down and stopped it before it did any damage. of course the guy won a judgement from the garbage company.