In Orange Bus we have been looking at our coding style lately. We have created our very own coding standard. Since we base most of our applications on the drupal we chose to use the drupal coding standard as our main source of inspiration.
During our process of creating this coding standard we found a few good links I thought we should share.

Mike @ Orange Bus found these two articles about beautiful and practical code, both these are a must read:

http://www.wilshipley.com/blog/2007/05/pimp-my-code-part-14-be-inflexible.html

http://www.perforce.com/perforce/papers/prettycode.html

Another blog post about line density worth reading is:

http://paul-m-jones.com/?p=276