[jpdrag0n]

is the OP talking about taking the shinkansen? if you are...well i dont recommend it. like MMM said its expensive. people commute everyday using the JR and other lines and it really isnt a problem. if you live in a city with 12 million people and most people commute by train, of course its going to be crowded. that really cant be helped. some of my friends commute from saitama to hachioji to go to university. if you live in tokyo you know that thats a loooong commute so yokohama to tokyo station is nothing compared to that.