toilet topic, yeah!!!
I do agree with Boutux that Japanese public toilets are always clean, old models as well as new ones. What stroke me the most the first time I went there was how clean the toilets were in train stations (or are dirty public toilets a french specificity?). at least in big cities.
I like the modern ones with music or flush noise, a strange but amusing experience.
Those who are interested in the matter : a big company that make toilets got a showroom with lots of models, somewhere in Shinjuku.
(makes me remember that the first picture I took in Japan was the toilet remote of my hotel room in Kyoto...)