Gosh, I seem to have been rather remiss in not mentioning these web sites before. You’ll have to excuse my ageing brain
It’s Expert’s Exchange without the suck.
Anyone can ask a programming-related question, and normally an answer will be posted within a few minutes – that’s how active the user community is. It’s likely that there will be a number of answers for any given question, and the asker can select their ‘best’ answer.
If you register on the site (using OpenID) you will collect ‘reputation’ or ‘karma’ points and ‘medals’ as you use the site. Anyone (above a small threshold of karma) can vote both questions and answers up or down, so in theory the best answer should find its way to the top of the list.
Stackoverflow.com has been around for several months now and is proving to be an invaluable resource. Googling for almost any programming-related question will probably get a result on stackoverflow.com.
You may also be interested in the weekly podcast by Jeff and Joel, which is always worth a listen.
I can heartily recommend both sites – obviously it depends on your focus as to which (if either) will be useful to you.