Shibuya Crossing - one of the busiest crossings in the world in Tokyo, Japan. There is a great viewpoint that has opened recently from which you can see the whole crossing perfectly. Fun-fact - I crossed this junction around 80 times over the course of 2 days. Night pictures, people photography, videography, you name it - the junction is perfect for it!
This shot here was staged with a friend of mine that stopped dead in the middle of the road. People weren't too happy, but it made for a great photo.