Haha, if anything, the one thing that I noticed most when I visited Japan was that everything was just so damn *clean*. Everyone is also pretty conscientious of everyone else, too.
That, and there are like *no* public garbage cans. People pretty much pack out whatever garbage they create and throw it away when they get home.
A decent number of vending machines, with both hold and cold drinks, including canned whiskey.
I miss it - can't wait to visit again soon.