I think this is the best song I've heard all year: "Wicked Games" by Canadian R&B singer the Weeknd. (Warning! Foul language!)
I love that it nearly shares a title with the Chris Isaak song, which had a foreboding feel, but never went this dark. This is so dark it's evil. If any other R&B sounded like this, I'd actually give the genre a better chance.

I left my girl back home
I don't love her no more

I keep listening over and over and over, dreaming about CJ.

You can get the whole album for free direct from him. Nothing else this great on one inattentive listen through.

There's a video on vimeo, too, which is pretty awesome, but it's got nudity and drug use, so you'll have to put in the legwork.

What've you got?

[PS. Soundcloud embeds don't seem to work, or this would have been even cooler.]