Some other observations:
The Japanese love their pop music. There is a group called AKB48, consisting of over 50 group members. Their pictures are EVERYWHERE, it's difficult find a place where you cant see a poster or another ad.
Their game centers are awesome. There is loads of variety in the genre and there are loads of centres to choose from. There are games involving cards which seem to be quite addictive.
I like the idea of police boxes all over the place rather than UK super stations as seems the thing in the UK.
They have restaurants everywhere and they're usually of pretty good quality.