I'm sure Dragon Age makes the list do to the ability to have sex with an NPC member of your party including gay sex with the male elf if you choose... not to mention the fact that you can go to a tavern and order up a female or male prostitute, regardless of your character's sex.
Warden
I wouldn't exactly call it "sex" regardless of the genders of the PC and NPC.. Hugging is more like it...
It's funny how much movies get away with compared to games, both when it comes to sex and violence, but especially sex.