I'm a web developer that's been in the industry for a little while, and I'm starting to feel a little...outmoded. Newer people (straight out of school) that we're hiring seem to be more in touch with trends and changes, and I'd really like to stay on top of tricks of the trade and get useful ideas that can help me as a developer.

So...towards that end, are there any sites or blogs related to CSS/AJAX/design principles/DHTML/whatever that YOU read regularly that you find particularly interesting or helpful, and keep you up to date on things?

(mods, I'm posting a similar thread in the programming forum; as these are two different audiences, it seemed like there should be two different threads)