Well, the following is not really a fanfic, but since i'm the one moderating the forum...
Cowboys & Cruisers - a Firefly screencap webcomic by Harry, JLBlue and Grombrindal
Based on the ever-popular Firefly, Cowboys & Cruisers is a screencap webcomic in the vein of Darths & Droids. Although similar in style and format, Cowboys & Cruisers will hopefully prove to be a unique comic in its own right.
Here are the cover and first episode
Read more at devianart