I think it's a little different in Tokyo because there are more gaijin there in general. Just wait until you go to some smaller towns! I want to know if crowds of small chilodren still follow you around shouting "gaijingaijingaijin!!" or "Jis is a pen!"
I lived in Japan from ages 8 to 13, and it was the culture shock exerience of a lifetime. It's funny because I was just telling my boyfriend about it last night over sushi - he was telling me about his first sushi experience, and I was telling him I don't even remember my first sushi experience because it was just one of the 10,000 things causing me culture shock every minute of the day. I told him it was kind of like this: Eating breakfast - culture shock! Going to the bathroom - culture shock! Walk out the front door - culture shock! Go to the corner market for a carton of milk - culture shock!
I'm sure Japan has changed a lot since I was there. Do keep us posted.