I had to use Jekyll the other day for something relatively small and it frustrated me, but that's because I've been using StaticMatic (http://staticmatic.rubyforge.org/) for about a year and, let me tell you, it's the bees' knees. The cat's pajamas, if you will. Haml, Sass, Rails-like templates, generates the html and css to upload to your site. I added a deploy script that minifies my css and js, and it's been a thrill to work with.