Killian is one of the original premium WordPress themes released, but has received several updates since then and still provides a great look for a WordPress blog!

Killian 1.0 Theme

Features included with Killian:

• Widget-Ready
• Drop-down navigation for sub-pages.
• Tag support for WordPress 2.3.
• Built-in archives page.
• Drop-down boxes for categories, monthly archives and site tags.
• Gravatar integration on comments.
• Gravatar integration for author photos.
• Multi-author blog functionality.

Killian Prices:

• Personal ($49.00)
• Developer ($159.00)

Source/Demo | Purchase

There are a number of incredible blog themes available today, but one of my personal favorites is the Blubs theme from Blog Perfume.

Blubs Theme

Features included with your purchase of Blubs:

• Clean and Elegant Design
• 2 columns flexible layout
• Navigation Drop-down Menu
• Widgets ready on sidebar
• Search bar at the top
• Ready for125px and 250px ads integration
• Separated comments/trackbacks
• Built-in gravatars in comment section
• Print.css stylesheet
• Author Profiles & Archives
• Clean & valid codes - XHTML 1.0 Strict + CSS 2.1
• Cross browser compatible - tested on IE/Win, Opera, Firefox, Safari/Win.

Blubs Prices:

• Single-Use ($49.95)
• Multiple-Use ($99.00)

Source/Demo | Purchase

Are you someone who spends a lot of time on social networks?  Whether you enjoy Facebook, Digg, YouTube, MySpace, or Twitter, the new Omni Theme is going to be a perfect fit for your WordPress blog.

The Omni Theme allows you to easily integrate your social networking profiles into your WordPress blog and have a great look for your readers!

Omni Social Networking Theme

Check out the live demo for a live look at the theme in action.

Omni Theme Prices:

• Single-Use ($79.99)
• Developer’s ($199.99)

Source/Demo | Purchase

If you prefer not dealing with WordPress code and enjoy using widgets, you’ll want to check out the most flexible WordPress theme ever created. 

What I’m speaking of, of course, is the new Flexx Theme from iThemes.  This new premium WordPress theme has revolutionized the entire industry with its over 1,000 possible layout combinations!

Aren’t sure it is truly this flexible?  Check out the following screenshots (all made from the control panel!): 

Flexx Theme 

Flexx Camo

Flexx Candy Apple

Flexx Dark

Flexx Sports

Flexx Canvas

Flexx Professional

Flexx Uncorked

Although these themes are incredible looking, the true strength is with the features included with the Flexx theme:

• 1,056 possible layout combinations – Pick and choose your layout with a mouse click
• Rotating header images – Easily upload your new header images and set the Flash-like transition effects
• Contact Form Page Template – The custom image uploader feature allows you to personalize your site with your own logo
• Plug and Play Graphic Changes – Easily change the look of your site by uploading new background images (setting every different combo with it) and setting the color through a Photoshop-like color picker.
• Menu Builder – Pick and choose what Pages you want in the menu navigation, including subpages.
• Search Engine Optimization – As with all our themes, we’ve built it to get you the best exposure in the search engines, and include a SEO panel to tweak some basic settings.
• Color Styles - This first series comes in two pre-built color styles (Bold and Canvas), but it has a rockin’ feature that lets you easily upload new background images (setting every different combo with it) and setting the color through a Photoshop-like color picker.
• Drop down navigation menu

Flexx Theme Prices:

• Single-Use ($79.95)
• Multiple-Use ($249.95)

Source/Demo | Purchase