DarkWyrm has just opened an UI Design section to his page. Here's what it will include:

After quite a long time of adding a little here and a little there, I now have opened up a new section of this site, devoted to designing good applications from the perspective of a BeOS developer and student of UI Design. This area of the site will feature design-related articles, and those articles featured in the OpenBeOS newsletter will (from now on) also be featured in "enhanced" versions which will contain content which is slightly more polished and other features not possible in the newsletter will be included. A couple new articles (one of which is to be featured in the next newsletter) have been included for your enjoyment.

So if you're working on that area or it interests you, head over and start reading.