Did anyone ever hear about "super loos" (it's a British expression, the plural of loo)? These are very interesting products from Japan that can cost you up to 8'000 pounds a piece I was told... Why would people pay that much for a loo? They can include functions such as heating, music playing, and glowing in the dark for example (long live Japanese imagination)!!!!!
Take a look at:
http://gb.toto.com/service/downloads/downloads/c/Product/a/libraryDetails/product/Giovannoni_WASHLET/
You have a description of the product with the technologies associated with it. The best thing is that it comes with a 44 pages instruction manual to help you understand how to use the toilet!!!!