See also: About 'Show me your Code'. I was particularly impressed by Your Mother's anecdote in response to that node:

Now for the anecdote. Couple years ago I had a contract that was making me insane when a job that was exactly what I wanted appeared on the boards. I wrote and CPAN'd a module related to the position as my cover letter. I got the job and with the highest salary I'd ever had by a lot.