SASS Sticky Footer Mixin - I didn't find one using my favorite method (this one: http://cleanstickyfooter.herokuapp.com/) so I wrote it up myself.

sass-sticky-footer.scss

@mixin sticky-footer($footer-height, $wrapper-selector: unquote("#wrapper"), $container-selector: unquote("#container"), $footer-selector: unquote("#footer")) {
  html, body {
    height: 100%;
  }
  body {
  	margin: 0px;
  	padding: 0px;
  }
  #{$wrapper-selector} {
    min-height: 100%;
    height: auto !important;
    height: 100%;
    margin: 0 auto -$footer-height;
    #{$container-selector} {
      padding: 0 0 $footer-height 0;
    } 
  }
  #{$footer-selector} {
    height: $footer-height; 
  }
}

// usage if you're using the default element ids
@include sticky-footer(30px);

// usage if you want to define the element ids
@include sticky-footer(30px, '#page', '#main', '#colophon');