Yaoi and Yuri for me. But whatever goes, it's more fun that way.
I remember when I was getting into yuri and stuff reading a manga called Strawberry Shake Sweet! man, that was hella cute.
Then there's the yaoiest of all the yaois, Dramatical Murder, which recently got a short anime and a couple OVAs if I'm right. The anime is pretty SFW and man that the quality is amazing. 'cept for episode 3, shenanigans on the animation place. Now, the OVAs are quite NSFW but I haven't really watched them, just seen pics.
And now that I talked about DmmD I'd like to talk about a game that is also some kind of a Visual Novel, called Monster Girl Quest. It is... amazing. 18+ content of course, and some vore but you can deactivate both with the settings. History rich, comical, dark. Everything needed to make people a fan of it. Not precisely yaoi or yuri but... it was part of my life for a while and it still is.