Responsive NonProfit – One of the first
Price: $35
Bhinneka is a good fit for charity and nonprofit looking to raise donation money.  This theme features two-column page layouts, slideshow capability, 3 alternative styles, and drop-down menus.
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See some more great themes: Responsive WordPress Theme

Theme devoted towards showcasing food and recipes
Price: $35
This theme features: Recipes Listing Page, Feature Rich Recipe Detail page with two beautiful design variations, hrecipe microformat (great for search engines), Various Short Codes, Contact Page template, Easy Theme Options and more.
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See some more great themes: Restaurant Premium WordPress Themes

Embed videos easily
Price: $39
Features include: View your video in a lightbox directly from the listing pages, Use Vidiho as a normal blog theme (even when you don’t have videos), an impressive slider in order to host your HD videos, and more!
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See some more great themes: Video WordPress Themes

Beautiful modern and responsive design
Price: $35
Artica is a very pretty, clean and modern design for businesses to take advantage.  Some unique features to this theme include: unique Icon Menu to be used on any page, easily backup your data & settings in the admin panel and it’s built on a robust MVC framework which means that the HTML design is completely separate from other PHP.  Other features include: the opportunity to easily alter colors, images, fonts (over 200), sliders, portfolios (many to pick from) and galleries via the admin panel.
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See some more great themes: Business WordPress Theme

Simple Responsive WordPress theme with an above-the-fold homepage slider
Price: $35
March is an attractive theme that can be customizable with unlimited colors, 3 homepage slide shows, 7 portfolio layouts, 2 blog lists, easy theme options, automated thumbnail resizing and more.
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See some more great themes: Responsive Business WordPress Theme