eckiq™ is a custom made wordpress theme which was used with my blog from 2007 to 2009. It combined minimalistic interface appearance with slick usability to achieve both focus on the articles and recognisability.
As usual this theme was also a cooperation with zfen. This was the main interface:

The comment rollout:

It of course had a logo:

Other key features were:
-a collapsable “sidebar” at the top containing all navigating tools (pages/search/filters)
-a huge collection of custom emoticons powered by the zmilies™ plugin by zfen.
-light and dark version.