I'd love to do that meme except...I can't even imagine having sex with any characters. I can perhaps imagine watching them have sex and being a voyeur - or that pervy watcher behind a one way mirror who may or may not direct their actions with another character - but actually having sex with them? Hmm..
And I admit - I might include a woman or two in a list like this - Faith from the Buffy series is one of those characters hot enough that it goes passed gender. And I wouldn't mind putting her in the middle of a threesome with Dean Winchester and Captain Jack Harkness.
The worst thing is that most of the other characters I can think of don't actually have actors/actresses representing them: Edward Elric, Toshiro Hitsugaya, Rogue, Naruto...hmm, maybe that's why I adore looking at cosplay photos so much...