My favorite place in Tokyo was the "Tokyo Times Square" aka Shibuya. This place is the one you see in movies that's all crazy and lit up with billboards and signs. We went during the day, so it wasn't as impressive. What was impressive was the sheer magnatude of people in the crosswalks of the streets. I use the term crosswalk lightly because as you will see in the video below, once the green walk sign is illuminated, it's a big free-for-all where crosswalks don't seem to exist.
What's funny is that Aaron and I were in awe of how many people there were. We found out later that we were there during a holiday and usually there's tons more people. A hotel employee told us that about a million people are said to cross this intersection at a given time. I don't know if that's accurate, but there's a heck of a lot of people.