On the 5th of April (yes, that's really soon!) is the second CSS Naked Day. If you think your blog looks good without CSS you should go ahead and strip! Else you should think about revisiting your markup and make it semantic, standards compliant and accessible.
There are plugins for the most popular weblog tools available, to let you easily get rid of your cloths. Most of them are probably listed on the CSS Naked Day website. And if you're a LifeType user you can download the CSS Naked plugin I wrote. (note: this plugin is written for LifeType 1.2 the included readme.txt explains the installation in 4 easy steps).