I am browsing the Internet right now from an Internet Cafe in Japan and I have to say that the way they do Net Cafes over here is excellent.
I have sampled about 5 different Net Cafes, but the one I am in now is far and away the best: Manboo.
Despite its unfortunate name, for 200 Yen an hour you get a private cubicle, a nice leather chair, headphones, a high speed internet connection, and a big screen TV. You can check out mangas and DVDs to browse in your cubicle just like in a library.