I recently beta launched http://exquisitejobs.com/ a job board where all jobs are hand picked, and only the best hackers/freelancers/applicants get in (invite only) to ensure the highest quality for all parties involved.

Might not be what you're looking for, but it does aim to be a higher quality job board.

Corresponding HN discussion: http://news.ycombinator.com/item?id=3244078