Doctor Who/Firefly cross over? Yeah that's right! Of course, you have to be a fan (or at least seen both shows) to get this joke, but I've been sitting on this one for a while. Sorry if it smells like fart.
I've had bad experiences with fanfic. I've actually started to read a few and they all ended up in some weird sex fantasy with the characters. But mainly I was just kidding. I got it booked marked for a slow day