If you are interested we have a great UI Design blog entry by @RichardSummers. I personally learned his pixel perfect alignment strategies last year and it helped enhance my UI designs.
Nice article. But where are the screenshots?
I felt the need for screenshots would be superfluous, as the article simply points out a few recommendations.
I would appreciate some good example screenshots too 
If I get a break from my busy work schedule, I will try to make a few examples.