I guess this is a bit of an urban myth, but still, i like it. There's this huge graveyard in Aoyama, a really posh part of town, where allot of the bomb victims from the war went. Now, this area's pretty known for 'spooky goings on' (and my wife has a thousand stories from when she worked there, particularly from a photo studio that's particularly famous as being haunted), but here's the bit i love. They built a subway right under this graveyard - the Ginza line i think - and the story goes, ghosts get on the train sometimes then end up lost. So what do Tokyo ghosts do when they get lost? Same as us apparently, they get a taxi!! There's all these reports from taxi drivers of people they've picked up in area's on the line, driven to Aoyama only to find that when they look look back for their fare, nobody's there!