"Post Modern Girls"

I'm surprised this isn't more widely talked about yet.
The Strokes and their opening act, New York "anti-folk" singer Regina Spektor, have recorded a duet.

The Strokes + Regina Spektor - "Post Modern Girls"
username: regina
password: rocksmysocks

Link from The Strokes Fan and The Strokes' Journal

I really like how because the Strokes have such a specific sound, and they are very particular about what they release and how it affects their body of work and image, that when they decide to record a duet it can seem like a very big deal.