I like the films where they play out the urban legends. I imagine 'the ring' started as an urban legend somewhere.
My favourite is the boogeyman who gets naughty kids and kids who stay up after midnight. Read up on the legend of the boogeyman (also known as the sackman), every country seems to have one.
There was an interesting urban legend about a car being stuck in a cliff. Upon investigating they found out that a man had put a solid rocket booster on his car and used it on a stretch of highway, his brakes had melted in a effort to stop before ending up in the cliff. Says the story. However there is no police record of such an incident. Mythbusters even tried it out and were able to keep the car under control.
