Fic Search: Torchwood X-Over

Okay, I'm amazed to find I've never read a Torchwood spander crossover! How is that even possible?! Can anyone suggest some good Torchwood X-over fics to me with a spander focus on them? Xander/John might not be bad either, but I would really prefer if it had a Spander focus to it!! 

Other X-Over's are welcome too -- Dr. Who, Moonlight, Bones, Supernatural, X-Men, ect. -- I'm just hoping to find some Torchwood/Spandery goodness ^__^