[loumf]

For your resume, the list of languages should be roughly in the order you would want to work in and can answer questions in.

Then, for each job, list the languages used in the order of how much you use them (or know them).

For example: If I see Ruby on your list, but it's after Java and C++, and then I look down the list of jobs and see that your current job is in Java, and the one from 3 years ago was in ruby -- I know what to expect.

If you still want a job with ruby (and the above matches your situation), then bring it up in the cover-letter -- explain why you would be a good choice (and probably you should practice ruby before any interview)

I've see people do "Proficient in" and "Familiar with" lists -- but really -- all I want to know is: will you be productive on day one with this technology, or do you need a refresher (and then I can decide based on my needs)