Speaking of which, my fic is the Dragonriders of Pern AU. I've kind of had the idea for a few years (that's generally what I like to use these challenges for, getting plot bunnies out of my head) but I didn't have the mental resources to actually write it. But I love writing this kind of AU, adapting the boys' personal history to fit the setting. (Take a vote, guys, what should my next SPN AU be based off of? High fantasy? Space adventure? My Little Pony???)
Now, I just need to get SPN Cinema out of the way, and then I can make Dragonborne all pretty.