Other jobs for gaijin?

I want to spend some time living in Japan after college, and I want to have a career that isn't about teaching English.

I don't have anything against the job. In fact, I'll probably start off teaching English to get a start in Japan. I don't want to limit my living / work experience to just teaching though.

Are there any other jobs in Japan that require or want gaijin? I'm Korean so I don't particularly stand out in a crowd of Asians. I speak English at the native level, and I speak Korean fairly well. I'm in my 4th year of Spanish, and I'm trying to learn Japanese at home, though I don't have much time because of school.

Also, what will I have to major in college for that particular career? (referring to the original question)

What is it you're currently studying and what is it that you want to do?

If you're only going to be there for a short-term, any job other than teaching English makes little sense for both you but more importantly, the employer in Japan. I think you just need to sit back and ask yourself: what skill or special talent would I bring to an employer that they wouldn't be able to get from a Japanese person. To be completely honest, I can't really think of many attributes, especially one just graduating from school with little or no job experience.