Shinkansen (新幹線) is the japanese name for the bullet train. These trains are really expensive but so fast and comfortable that they are well worth it. I only took one during my stay in Japan, to go from Hiroshima to Tokyo in my last day in Japan and I don't regret it. The distance between these two cities is something like 1000 km and it only took 2 hours 40 minutes, stopping at least 5 minutes in the main stations. The only drawback was the price. I paid around 19000 yen for one way... that was around 19000/140 = 135 euros!
During the time I was waiting for my train in Hiroshima, I took photos of the different kinds of Shinkansen which were at the station. Don't ask me for the names...
And this is how they look like inside:
Shinkansen, a nice experience!