While looking for designs for a couple of my private Drupal sites I went to the effort to create Drupal themes from a few designs found on Open Web Designs (and one WordPress theme). I've contributed these back to the Drupal community. For the most part they are complete with respect to the most common Drupal components although they may need tweeked in some of the admin views.

The first three are simple/minimalist designs and the last two are a little more complex.

• Blue Bars Theme - screenshot here
• Burnt Theme - screenshot here
• Simplex Theme - screenshot here
• Sharepoint-like Theme - screenshot here
• Internet Jobs Theme - screenshot here