Python Job Board - Large list of jobs for Python programmers. - http://www.python.org/community/jobs/
PHPBuilder.com: People - View public profiles of users for contract or full-time work in PHP, Java, ASP, JavaScript. - http://www.phpbuilder.com/people/
The Perl Jobs - For employers looking for Perl developers and for Perl developers looking for the next step in their career. - http://jobs.perl.org/
HotLinuxJobs.Com - Search firm specializing in placing Linux professionals, providing contract and direct hire services to our clients. All inquires kept strictly confidential. - http://www.hotlinuxjobs.com/