I like how careers.stackoverflow.com has a few unique fields that are quite specific for developers. I think that's a great idea and thought about another addition:
If you search the blogosphere it's quite common to see developers promote/display their programming book collection. I think it would be an interesting add-on to the careers website for devs to attach their favourite books to their CV. I know for a fact that I would weigh and applicant who has read "The Pragmatic Programmer" a lot higher than someone who has a lot of "Learn X in 24 hours".
The statistical interest would be interesting as well to see if there's any correlation with certain books and the type of jobs they get. I would be curious to see how many that read "Peopleware" get managerial jobs, and would also reflect favorably for that employer.