My crossover compadre Thom Holbrook has updated his great Crossovers & Spinoffs page (link found to the left). And he has a great article detailing how 'Battlestar Galactica' (the new version) should be linked to 'Firefly', all based on an in-joke:
And I'm more than willing to accept it. The new version of 'Battlestar Galactica' may be the better show, but I relegated it to Earth Prime-Time Delay where all the remakes of TV shows exist. (At least the first remake attempts.) The original show just worked better in connection to Earth Prime-Time. And besides, it does have that great connection to 'McCloud' (Grover played by Ken Lynch) and 'Mary Hartman, Mary Hartman' (UBS TV network from 'America 2Night') via 'Galactica 1980'.
Besides, I really wasn't too keen on trying to find a place in the main TV Universe to wedge in 'Firefly'. Its view of the future didn't seem to gel with a more generic vision which could easily house 'Star Trek', 'Babylon 5', and 'Doctor Who'.
It's the same problem I have with shows like 'Andromeda', 'Planet Of The Apes', and others.
Visit Thom's site. The power of crossovers compels you!