So I'm getting to go to the UK Games Expo this year after a friend suggested it, I don't think I'm going to be disappointed.
I wanted to pick something that I'd never get the chance to play... I think Cthulhu Firefly is definitely something like that :)
Firefly Call of Cthulhu scenario, 4 - 6 Investigators required: pre-gen characters supplied. (Players should be familiar with the Firefly ‘verse. No Cthulhu experience necessary.)