Interesting concept, but I already have a 2nd language (Greek), my brain is already filled-up and to seriously try to learn something like Japanese, with the terrible, Chinese logographic language system of making a symbol for damn near everything (instead of a Roman-style alphabet, fixed number of characters, ~26, etc.), it just looks way too daunting... It would be torture. I even bought a stupid Learn Japanese 4 CD set ages ago, hardly ever even touched it. I know it's been patched up with Katakana for foreign words, and Romanji, but still, that's all patches and keeps a bad idea for a system of writing ongoing... Meh.