oh! I'm clueless about the canon (though between Torchwood and Sarah Jane I'm slowly dipping my toes into Whoverse), but if there's doppelcest girlslash can you holler so I can add it to my archive (http://www.livejournal.com/tools/memories.bml?user=projectjulie&keyword=doppelganger+sex)? or just explain to me which pairings are doppelcest and I'll keep track?