Haha, though that was pretty good, den4. The Japanese actually don't have either an "l" or an "r" sound, they are kind of the same, with a "d" sound mixed in there to really throw you off. The way the Japanese "r" (ra gyテエ) was explained to me was that it is like pronouncing "l" and "r" at the same time.
Also of note, in Mandarin Chinese the "r" sound is the same as the Japanese "r," although there is a "l" sound (e.g. lai, liao, liu, and le).