Amazing Grace is a lightweight, super-optimized WordPress, and uses a 3 column layout with lots of extra features

UltimateBlogger is a sharp 3 column theme brought to you by the good people at justdreamweaver.com

iNove is a nice 3 column Wordpress theme using a black, gray, and white color scheme.

DevArt is a wordpress theme based on the DeviantArt.com website.

Xtremeblogg is another nice 3 column theme from justdreamweaver.com

CoffeeBreak is a nice and clean 2 column Wordpress theme.

BloggingTips.com Evolution is a nice theme that’s built to be customized.

WP_Premium is a sharp theme using a maroon and gray color scheme.

Carrington Blog isn’t just a blog theme. It’s an entire framework.

xMark is a full width 3 column theme.