Not sure how advanced you are, but as a relative noob, I've been reading, among others, the following sites:

http://www.smashingmagazine.com/ http://uxmagazine.com/

Smashing has really good books, most if not all you can buy as ebooks. If you want a good overall primer for less advanced UI/UX designers, read the Smashing Book #1

I also follow people like Paul Irish, but that's more for HTML5/CSS3 and front-end dev...

I've read a few books about the subject. One of my favorites is Designing The Obvious by Robert Hoekman Jr: http://www.amazon.com/Designing-Obvious-Common-Approach-Appl...

It has a pretty good signal/noise ratio.

Here's a pretty good article I came across a while back, more about the user testing side of Ui, but still helpful! http://www.boxesandarrows.com/view/dont_test_users_test_hypo...

What about http://www.designforhackers.com/ ? I havent read it (im not an UI guy)

It actually exceeded my expectations, which were fairly high. It goes in-depth to the point where, if you are just interested in the topic, you probably won't care for, but if you are looking to gain a more thorough understanding, it's great, especially for beginners.

Highly recommended.