narita express is about 3000 yen - approx 30 bucks each way to/fro tokyo station. i agree with the above, shinjuku also is home to tokyo's red light district and there are some seedy places there that i havent seen anywhere else(although i never had any trouble at all there). rappongi is cool and very vibrant, but a lot of that comes from the large expat community there...still a lot of fun though. ps - most cab drivers are older men and hence do not speak english