One of the ACCU mailing lists currently has a thread going where the challenges of hiring good C++ developers is being discussed. Someone posted a link to a software developer competency matrix. I thought it was rather good so decided to blog about so I didn't forget and so that I would have something to go back to for reference purposes.
Someone else in the thread posted that they had been inspired by another one but I found that was much more career/corporation oriented. The first one is much better for a techie to measure up against. It can be used to measure oneself or if you are involved the hiring game.