sabrina_diamond
iSanity!
from Australia
Since: Jan, 2001
Relationship Status: LET'S HAVE A ZILLION BABIES
#2: Aug 13th 2013 at 4:59:36 AM
Buffy the Vampire Slayer first volume where Buffy gets a Journey to the Center of the Mind.
In an anime, I'll be the Tsundere Dark Magical Girl who likes purple MY own profile is actually HERE!
Total posts: 2

I believe it started with Buffy/Angel. Charmed, Smallville, Jericho, and the X-Files have all now gotten in on the act, and I wouldn't be surprised if there were others I've forgotten or don't know about.
What are your favorites?