I used to learn German and bits of French but I would like to learn Japanese as I love Japanese cinema, especially the horror movies, some of which beat the American remakes hands down.
Take for example "The Ring" which was a Japanese original. Absolutely outstanding.
Would have been even better if I could speak Japanese.. The culture is also a very interesting one with the whole honor system and to find out that the Japanese used to be paid on an age scale across the country was very surprising.
On the todo list - learn Japanese and go there for a visit :)